Posts Tagged ‘BSA Super Meteor air rifle’
by Tom Gaylord, a.k.a. B.B. Pelletier
My rifle is actually a BSA Super Meteor.
The last report on this BSA Super Meteor was on October 15. That’s how long it’s been since we saw this gun in print. But in the background, I’ve been doing lots of things that I’ll share with you today.
The last time we looked at this rifle, I was taking it apart and getting a lesson on how it was built and what was wrong with it. To summarize for you, this BSA Meteor is made from folded metal, in the same way Daisy BB guns are made. And the piston head was attached to the piston by means of an E-type circlip that was incapable of standing up to the stress. I can tell that by the damage that was done when that clip let go — but more because the Brits have invented a much better solution for fixing this gun today, when it does break down — and all of them are going to break!
I sent my order to T.R. Robb in the UK for a replacement piston head, o-rings and spacers. The problem is that when I sent in that order I didn’t pay attention to the fact that the same order button also got a piston head for a BSA Scorpion pistol, which is larger than the Meteor head. Well, guess which one Mr. Lysdexic ordered?
That’s right, I ordered the Scorpion piston head. And a couple days later, when I realized what I’d done and contacted T.R. Robb, they had already shipped the order. But to their credit, they sent a second piston head — this one was for a Scorpion, too. That’s right! They sent me 2 Scorpion piston heads and no Meteor head! But I’ll give them credit for trying to help me, for being very generous and refusing my offer to pay for the second head, and for being very prompt in shipping both heads. I had them in less than 10 days.
So, blog reader David Enoch — I now have a spare BSA Scorpion piston head that I believe you said you needed. The price will be right, too. You’ll pay what I paid, which was nothing.
Lots to see here. The replacement piston head is the shiny one on the left, the darker original is on the right. Obviously, the replacement part is larger and has to be cut down to fit. The blue spacer and 2 o-rings are just some of the soft parts that came in the kit. There were a total of 4 o-rings of different sizes and 2 more spacers of varying thicknesses. They allow you to set the power of your airgun, and they also allow for differences in the tolerances of different guns.
When I saw how large the piston head was, I knew it wouldn’t fit. I asked my friend Otho to cut it down for me on his lathe. He also had to cut the o-ring channel deeper at the same time.
Silly me — I thought that would solve everything. So, Otho took the head and had it back to me in a week. Then, I assembled it to the end of the piston and tried to insert the piston back into the spring tube. But it wouldn’t fit! I’d taken it out several weeks earlier, and now it wouldn’t fit back inside! It was like that pair of blue jeans that used to fit, before they suddenly and quite mysteriously shrank. I hate it when that happens — especially to jeans I’ve worn for years!
I took a more critical look at both the spring tube and the piston. Glory be — they’re both made of folded metal like a Red Ryder! Except that Red Ryder spring tubes are generally round, while both of these pieces had variable shapes, with a tendency toward the oval.
The tail end of the piston. Here you clearly see that it’s folded metal, tack-welded at each end.
At least that’s the theory! Here you see the weld at the piston head end has broken. Wonder why the piston is no longer round?
And, on the other side of the piston, opposite the broken weld, the solid metal has also cracked! Here you can see the nut that now holds the piston head to the piston body. It’s not about to break off like the circlip did!
Looking at just the condition of the piston gives you an idea of the shape this rifle is in. I don’t think the design of the rifle caused all this damage. I think people continued to try to cock and fire it after the piston head separated from the piston, and they hammered it into the mess you see here.
I examined the interior of the spring tube very critically at this point and found a lot of metal galling (shiny areas that indicate the scraping of metal against metal without lubrication). There was also a fair bit of surface rust. I also found that some of the folded metal edges of the spring tube that hold the trigger parts were bent into the interior of the spring tube and were blocking the passage of the piston. I fixed those with a Dremel tool, but the inside of the tube was too deep to reach.
I showed the spring tube and piston to Otho, who agreed with me as to the extent of the damage. He felt he might be able to clean out the tube with a tool that holds strips of abrasive paper and is spun in an electric drill. I don’t own that tool, so I was only too happy to let him have a go at it. He also said he could tack-weld and refinish the piston where it was separating.
So, Otho came to the rescue once more. And he was true to his word, because a week later I got back the tube and piston, ready for assembly. But that wasn’t the end of the rifle’s problems!
Otho welded the broken piston and dressed it round again.
Otho also welded the back side of the piston where it was cracked.
Loose barrel pivot
I had discovered that the barrel wobbled from side to side when I first got the rifle. And a little research online told me this is a common problem with Meteors from the 1970s. Apparently, when the forearm stock screws are tightened, the shape of the stock allows them to pull apart the action forks that hold the barrel breech. It’s a design flaw of the rifle, and the solution is to not over-tighten those screws. But how to fix it — since the barrel pivot is a pin, rather than a bolt? Well, this is something I know how to do.
I chucked the forks in the padded jaws of my bench vice and closed the jaws on the forks. When there was some inward tension on them, I hit the outside vice jaw with a 2-lb. ball-peen hammer, which sent a shock wave into the metal of the action forks and realigned their crystalline structure. Or at least that looks cool when I write it. I haven’t got a clue what really happens! All I know for sure is that when you do this, the metal takes a set in the new position, and now the action forks are about 5 thousandths of an inch smaller then the breechblock of the barrel that has to fit between them.
Finally, all the faults had been corrected, as far as I knew. The piston now slides into the spring tube with only a little friction, not unlike a Weihrauch piston in a Weihrauch gun. It was time to assemble the rifle!
Otho and I both think whoever designed this Super Meteor Mark IV was a genius at eliminating cost and making one thing do many jobs. The way this air rifle is designed should be a study in an engineering course, but the students would first have to know how others had done the same things with other spring-piston powerplants. At every turn, you can see the embodiment of the Spartan design.
And the parts that need to be hard are hard! I mean glass-hard! There’s no wear on any of the trigger parts, or on the piston, where it’s held by the sear. The boys at BSA knew what they were doing.
Since there had been so much metal galling in the spring tube, I first lubricated it with Moly Paste before any parts went back in. The molybdenum disulphide particles will bond with the metal surfaces and will not wash out over time. I applied this paste (which is a thick grease) with a swab made from a long thin dowel rod covered with a paper towel on one end.
This simple swab can be used to clean the inside of spring tubes/compression chambers, as well as to lubricate them.
After the inside of the spring/compression tube was lubricated, I also lubricated the outside of the piston head and piston tail with the same moly paste. I’d like to say a word about the piston head now. The kit of parts I was sent had 3 spacers of differing thicknesses. Any of them will work, but each gives you a piston head of a different length when it ‘s fastened to the piston body.
The way the Meteor is designed, adjusting the length of the piston head controls the power of the rifle. A shorter piston head will give a longer piston stroke and therefore greater power. I don’t want power. I want a smooth rifle that’s easy to cock and is also easy to shoot. So I went with a thicker spacer on the head.
Now, I lubricated both the piston head and the tail with moly. The center of the piston body can be left dry because it’s narrower than the ends and will never touch the inside of the spring tube.
The piston head is lubed with moly paste. No precision is required for this application because this stuff spreads as the gun is cocked and fired. The other end of the piston got the same treatment before it was slid back into the spring tube.
Once the piston was in the tube, I coated the mainspring with Beeman Spring Gel and slid it into place inside the piston. Don’t look for that product anywhere — it’s obsolete. It was a viscous silicone (Beeman only says it’s a synthetic in their catalog; but given where it’s going, I’m pretty sure it’s silicone) grease that dampened vibration without slowing the gun much, if any. So, pretty much any viscous silicone with the consistency of toothpaste should suffice. Or, you could do it the old-school way and just use a lithium-based grease.
The powerplant went together the same way it came apart; but the barrel, which was the next item, was harder to install because the action forks were now smaller, thanks to my repair. Nevertheless, the barrel did go into the action forks of the spring tube (I “buttoned” it in using the baseblock to spread the forks slightly), with the cocking link locked inside the piston and lots of moly grease on all metal surfaces that touch.
When it came time to close the barrel, I got a small surprise. It seems the spring-loaded chisel detent (the chisel-looking thingie that holds the barrel shut when the gun fires) was sticking out so far that the barrel wouldn’t close! Examination revealed that the detent is held in the baseblock by the pivot pin that passes through. How in the heck was I going to do that?
Well, if you think like a redneck cheapskate, which I am trained to do, you insert the pivot pin partway, lever the chisel detent back as far as it will go and then tap the pivot pin home. I could have closed my eyes for this maneuver, it went so smoothly. Obviously, I’d discovered something that the original 28-year-old BSA assembler, Trevor, could do 175 times in an 8-hour shift back in 1978.
From there, the only big task was to get the mainspring back inside the spring tube all the way. It only stuck out the end of the tube less than an inch, but it also had to go another full inch into the tube, where it would be held by a crosspin that’s profiled on one side to capture the base of the spring guide. It’s easier to just show you.
This is the side of the assembly pin that fits inside the base of the mainspring guide and holds it inside the rifle.
This 58-cent tool was made from a 4-inch plastic sprinkler pipe in about 20 minutes. With the action in the mainspring compressor, it pushes the washer at the base of the mainspring, while allowing the crosspin to be inserted through its slot. It isn’t beautiful, but it worked both times I used it and looks like it will hold up for dozens more jobs like this.
And the pin is back in place. The contours on the other side of the pin have meshed with the base of the spring guide.
I showed you these parts and the trigger parts in the earlier reports, namely in Parts 2 and 3. So I’m covering ground that I’ve already explained. When I took the rifle apart back in October, I didn’t have to use a mainspring compressor; but to get the mainspring back in place and insert the crosspin, I did. And it was easy.
And the remainder of the airgun went together exactly as it should. I have a theory. Whenever something goes together easily, it means I’ve left out something. I’m in my wetsuit but have forgotten to put on my briefs! I remember learning how to disassemble and assemble the M1 Garand rifle. I thought I could never learn, but a few weeks later I was stripping it like a pro. That’s the way BSA spring rifles are, I guess. You’d like them to come apart in 30 seconds without hand tools, but they don’t. However, once you’ve been down the path a few times, I’m sure the job seems simple.
This is the part I dreaded. Sure the parts were back together, but who was to say they were where they should be? Only cocking and firing the gun would tell me that. So I did. And it did! Hurrah!
The only task left to do is to clean the barrel. I had close to 2 months to do that while it was off the rifle; but to tell the truth, I wasn’t sure if I would be able to get the gun back to functioning again. No sense doing a great job on a barrel I’ll never use. But now the gun is working, so the next report can be about the velocity.
by Tom Gaylord, a.k.a. B.B. Pelletier
My rifle is actually a BSA Super Meteor.
Today I’ll tell you the rest of the story. And, what a story it is! I had no plans for this part of the BSA Meteor report to go as long as it did. Circumstances just led me to this point. All I did was faithfully chronicle what happened.
When we left the Meteor yesterday, I’d removed the piston body, but the piston head was still stuck inside the spring tube in the forward part we call the compression chamber. The best access is through the air transfer port — a hole 0.125 inches in diameter. I had a pin punch that fit the hole, and I hoped it would need only a couple taps to come loose, but it was far tighter than I’d thought. The pin punch went in as far as it would go (about 1.5 inches), and the head was still out of reach from the other end. I needed a longer punch.
The air transfer port provided the best way to get to the stuck piston head. With the barrel removed, it was easy to insert a pin punch through the hole and tap the piston head out of the compression chamber.
I flipped the spring tube straight up, with the transfer port on the lower end, and poured Kroil (penetrating oil) on it to loosen the head. This is similar to freeing a stuck piston in an old tractor, except that this is smaller and a lot easier to work on. I left the Kroil in the spring tube overnight; and by the next morning, none had passed the piston head. The piston was stuck tight!
My shooting partner, Otho, made me a 12-inch pin punch from music wire that was exactly 0.125 inches in diameter. I met him out at the rifle range, where he gave me the new punch. All it took was a couple taps with a ball peen hammer and the head came right out. The Kroil on the walls of the spring tube made removal that much easier once the head got to the place where the oil covered the walls.
What came out of the gun was surprising, as it didn’t look like a Meteor piston head was supposed to look. But it did appear to be factory-made. Experience has taught me to, “Make haste slowly,” as Benjamin Franklin once said, so I studied the piston head and thought about the project for a day.
Looking on the internet, I found one other person who had the same problem — the head separating from the piston. And his gun was filthy dirty inside, just like this one. When he described his piston head, it turned out to be exactly like the one in my gun and also is not a head that’s normally seen in a Meteor. Then a happy thing happened.
New blog reader Dag Evert told me my rifle looks like a blend of different Marks to him. He sees some Mark IV and some Mark V characteristics in my gun, and he told me that he has seen 3 different piston heads in these rifles. For some reason, the guy on the internet thought someone had substituted a BSA Scorpion piston head in his rifle.
The piston head of a normal Mark IV Meteor has a large o-ring near the front of the head that is backed by a buffer washer. The head is either keyed to a slot in the end of the piston or there’s the newer (cheaper) kind of piston head that’s held on the piston by an E-type circlip. That kind can separate from the piston just like mine did.
My piston head appeared to have leather around the sides. I had to destroy the leather material to find out if I’m right about the composition, but I also don’t care for the weak way this head attaches to the piston. According to what I’ve read, it’s actually very weak! I would like to replace it with a new piston that uses a more conventional head that won’t separate from the piston while inside the gun.
This is what the Meteor piston head looked like when it came from the rifle. This is an enlarged and enhanced photo, so you can see the separation of the o-ring and buffer washer; but when looked at in normal light at normal size, this head looked like the sides were all leather. The shallow groove in the end of the head is for the E-type circlip that holds it fast to the piston.
This is an E-type circlip that’s used to hold the piston head to the Meteor piston.
John Knibbs in the UK has an entire rebuilt piston with a new head that’s ready to go, but the price is 45 British pounds, which is about $72.00. Add shipping to that, and it comes out to around $80 — which is more than the rifle cost. Of course, I have to either fix the rifle or sell it for parts, and I do want to fix it. So, I’m going to have to spend some money. I don’t want to make parts for this gun if I can get around it…because most of our readers can’t make parts, either.
I kept searching for something that was less expensive. I had a perfectly good piston, so all I needed was a new piston head. Instead of being attached with a circlip, as mine is, I wanted one that had a more positive attachment so it wouldn’t separate again.
At this point, I wasn’t entirely sure that the head in my gun was the same as what was being offered on the internet. It was time to take my piston head apart, and that probably meant destroying the soft parts. But since this head wasn’t going back in the rifle again, I saw it as no loss.
The first step was to remove the rear washer behind the buffer material. It should have been free to come off, and it was.
Whatever material the buffer washer was made of, it was completely gone by this time. The simple act of pulling off the metal washer behind it caused the washer to begin to disintegrate. It wasn’t the leather I thought it was.
The o-ring was so flattened by years of compression inside the chamber that it looked like something else. I cut it off to show that it is really a conventional o-ring.
With the o-ring cut off, you can see that this piston head is the usual one found on a Meteor. But the method of attachment to the piston by a single circlip is far too weak for reliable operation.
What I needed was a piston head with all the parts that attached to the piston with something more positive than just a circlip. And with more searching on the internet I found what I needed. On T.R. Robb’s website, I found an adjustable piston head for BSA Meteors that comes with the buffer washer, 2 o-rings and a nut to fasten the head to the piston.
Best of all, the cost for this piston head shipped to the U.S. is just 17.25 British pounds, which is only $27.51. That’s affordable in my book. I ordered one, and hopefully it’s on it’s way.
The fact that such a piston head exists tells me that others have had this same problem. That, by itself, is reassuring to know.
Before I end today’s report I want to draw your attention to the old piston head once more. Notice that the top of the head is bare metal. That’s the part that rests against the end of the compression chamber. But it doesn’t slam against it — or at least it’s not supposed to. If it did, it would hammer the gun apart in a relatively short time.
No, the compressed air in front of the piston head cushions the head from striking the top of the compression chamber when the gun is working right. Hopefully, all that’s needed to get this rifle working right again is a new piston head with fresh seals and some cleaning and lubrication of the gun’s other parts.
by Tom Gaylord, a.k.a. B.B. Pelletier
My rifle is actually a BSA Super Meteor.
It would be an understatement to say there was a lot of interest in the BSA Super Meteor I got at the Roanoke airgun show. And in the discussion that followed, I learned a lot about this rifle that is now in its seventh design iteration.
First of all, the experts agree that the Meteors — Marks I and II and possibly the Mark III — are the best ones. Certainly, both I and II are. My Mark IV, on the other hand, is characteristic of BSA’s lowest days, when quality went out the window — at least to hear some readers tell it.
I don’t have a Mark I or II to compare with, so all my observations have to be based on this one gun. When I tried to fire it for the first time, it sounded horrible — as if it was broken.
Well, it turns out that it was broken! Today, I’ll show you the step-by-step process of disassembling this air rifle, and I’ll finish the story tomorrow with the damage I found and what I intend doing about it.
I’ve never liked disassembling BSA and Webley spring rifles because of how they go together. I suppose that if I did it all the time, it would seem simple; but compared to a Weihrauch, Air Arms or even a Diana, these two brands seem to be harder to separate. They seem to be designed for production — not for maintenance. At least, that’s my impression.
Having said that, however, I was surprised how easily this rifle did come apart. It was very straightforward and never gave me a bit of trouble. Like I said — I don’t have as much experience disassembling BSAs or Webleys.
All my photography today was done with a flash, so please excuse the poor exposures of some of the parts. I’ve made sure you can see what’s important, and I’ll direct your attention to it in the text…but these are not as good as my normal photos.
Step 1. Remove the stock
The stock comes off with two screws on the forearm and one on the triggerguard. Once out of the stock, it was easy to see why the forearm screws had pulled apart the action forks. They’re screwed directly into them instead of being attached farther back on the spring tube. This is a weakness in the design. Also, each screw was missing a stock spacer that keeps it from pulling on the action forks.
The forearm screws attach directly to the action forks. When they’re screwed tight, they tend to pull the forks apart — especially when they’re missing their spacers. Note the barrel pivot pin above the flange with the threaded hole.
When I removed the stock, I could finally see the trigger adjustment screw. It obviously adjusts the sear contact area, so be very careful when you adjust it!
With the action out of the stock, you gain access to the trigger adjustment screw.
Step 2. Remove the trigger parts
In the Meteor, the trigger housing is welded to the spring tube. So, it stays on the rifle, but the trigger parts have to come out to remove the piston, which is held by the sear on its side, rather than with a center rod. The trigger parts are held inside the housing by 2 pins, although it looks like 3 pins at first. One of those pins is a rivet and does not come out of the gun.
Trigger parts are held in by only 2 pins. The small pin above the curved trigger blade is pushed out from left to right, releasing the blade; then, the large silver pin at the top left is pushed out to release the rest of the trigger parts. The rivet at the right side of the housing stays where it is.
Normally, when faced with pins like these, I get a pin punch set, but I found that the trigger blade pin was loose enough to remove with just finger pressure, alone, and the large silver pin came out by pushing on it with a combination of my finger and a ballpoint pen! The large silver pin in my rifle appears to be a captive pin that remains with the trigger housing. The trigger was completely dry, which surprised me because it came apart so easily.
You have to take the trigger parts out because they’re being pushed up by the trigger spring to block the piston. The trigger pushes on the sear, which bears on the edge of the piston, so it has to be removed to allow the piston to clear the spring tube.
Once the large silver pin is removed, you can pull the trigger parts out of the housing. They consist of the trigger blade and the sear, plus a bent spring that puts upward pressure on the sear when the parts are pinned inside the trigger housing. The trigger blade contains the adjustment screw plus nylon bearings on both sides to keep it from wobbling when installed. It’s more sophisticated than it looks from the outside of the gun. Also, I can tell by the minimal wear patterns that both the trigger blade and the sear are at least surface-hardened. My guess is that they’re case-hardened.
The trigger parts consist of the sear, trigger blade and trigger spring. The pin shown here is the same one that was removed to take the trigger blade from the housing. The white oval on the trigger is a nylon bearing that takes up any side-to-side wobble, plus it helps hold the adjustment screw in place.
Here’s the trigger housing with the parts removed. The large silver pin appears to be captive in my rifle. You can also see the rivet that never comes out. Notice how dry the mainspring is!
I noticed how very dry all the parts were. I was beginning to suspect that this gun had never been apart since it left the factory. Of course, without a complete disassembly, it was impossible to tell for sure; but I would have expected to find some lubrication on some parts. At this point, there was no lubrication on anything, and all the of the parts were dry, dusty and lightly corroded.
Step 3. Remove the mainspring retention pin and the mainspring
Step 3 is where you can make a very big mistake. With many airguns, the one or two cross pins on the side of the spring tube hold the mainspring and its guide in the rifle. The Meteor has a single pin, but it isn’t held in the rifle in the same way that other cross pins are held. Instead, this single pin is keyed to the spring guide. If you try to drive it out with a pin punch, you’ll ruin the pin and probably ruin the spring tube as well.
Here you can see the mainspring retention pin. Its function is similar to all retention pins in other spring-piston air rifles, but this one has a secret. It’s keyed into the spring guide. Until you take tension off the spring, this pin cannot be taken out of the rifle. If you try to take it out with a pin punch before taking tension off the mainspring, you can damage parts.
To get the pin out, you must take spring tension off it by pressing the mainspring in and away from the pin, then press the pin out of the gun from left to right. It will press out with finger pressure just as easily as the trigger pins did, once the spring tension is taken off. You need to make a special tool to take off the spring tension. I was able to make this tool with a part I bought at a local hardware store for less than 60 cents.
The tool does not have to be strong. It only has to put about 90 to 110 lbs. of force on the spring guide. I had my choice of steel, aluminum or plastic parts to work with, and I chose plastic so it would be easier to work. I bought a 4-inch PVC pipe riser made for a yard sprinkler system. I knew this would be easy to work with a Dremel tool. I brought it home, measured the work to be done and made the cuts on the pipe with an abrasive wheel. The total work time was about 20 minutes. I now had a tool that would span the cross pin and push on the base of the mainspring guide.
In about 20 minutes, I made a tool from a 4-inch sprinkler PVC pipe. It isn’t beautiful, but it worked the first time and looks like it’ll hold up for dozens more jobs like this.
I’d intended to use the spring compressor with this tool; but after I saw how easily it worked, I decided I could use it outside the compressor. All I did was put the tool around the pin and pressed down on the barreled action, taking all the spring tension off the pin. It was then very easy to press the pin out of the gun with just my finger.
Here you can see how the cross pin is retained by the base of the spring guide. You can also see the small amount of tension that’s on the mainspring of this rifle when the pin is installed. It was easy to take the cross pin out and take the tension off the mainspring without a compressor.
Then, I could remove the mainspring and spring guide from the rifle. Once they were out, I saw there was no lubrication on any of these parts, nor was there any on the inside of the rifle. I was pretty certain at this point that the rifle had never been apart; or, if it had, that someone had intentionally dried off every part before assembly.
The mainspring looks pretty good. I rolled it on the table and couldn’t see any significant canting. I believe I’ll use this mainspring when the rifle’s rebuilt.
The mainspring looks pretty good, but it’s bone dry.
Step 4. Remove the barrel
It was time to take out the piston. On this gun, the piston is connected to the cocking linkage in such a way that the barrel has to first be removed from the spring tube to disengage the cocking linkage from the side of the piston. The Meteor has a pin (instead of a bolt) as a barrel pivot. Like all the other pins on this rifle, this pin was only tight enough to hold the parts in position. I could move it with my finger. I broke the barrel open to take all tension off the pin (from the detent), then pushed it out from left to the right.
The barrel pivot pin has been started by finger pressure, alone. No pin in this rifle has needed a pin punch for removal. To get the pin all the way out requires a push from a screwdriver.
With the pin out, the barrel pulls away from the spring tube, and the cocking link can be removed from the piston. The piston can now be removed from the rifle.
Step 5. Remove the piston
Once the cocking link is out of the piston, it’s time to slide the piston out of the spring tube. Everything was so dry on this rifle that the piston had to be coaxed out of the gun by levering it with screwdrivers through the cocking slot. When it was out of the gun, I discovered that the piston head wasn’t attached! It’s still inside the tube at this point! No wonder the gun fired so violently!
The piston is missing its head. It passes through the hole on the end of the piston and is held in place by a circlip, which is missing.
That would normally be all you have to do to strip a Meteor, but I still have to get the piston head out of the gun. I suspect it’s going to tell me a lot about why the gun failed like it did.
This is turning into a long report, so I’ll finish it tomorrow.
by Tom Gaylord, a.k.a. B.B. Pelletier
My rifle is actually a BSA Super Meteor.
Of the 3 vintage airguns I acquired at Roanoke, this is the one you readers most wanted to see. And it’s one I have been curious about for two decades. I’ve seen hundreds of them at airgun shows, but every time I picked one up, it screamed “cheap and crappy.” Instead of blued steel, the metal parts are painted, which is an immediate turnoff. But it’s worse than that. I have never seen one of these Meteors that wasn’t loose at the breech, as in wobbling side to side where the barrel breaks. I made a special effort to check each one at Roanoke, and even the newest one in the best condition still wobbled.
On the flip side, I’ve read numerous glowing reports by owners and former owners who love the gun. Our own blog reader Kevin has more than one Meteor in his collection and thinks a lot of them. There must be something to this gun, regardless of my impressions.
Meteor — Mercury — Comet!
As a practicing dyslexic, I’m the first to confuse the names of things when they sound alike, or share a common thread, and this BSA is an example. I have called it by all 3 names in conversation, while meaning just the Meteor by itself. You see, BSA actually made airguns by all 3 names, but the Meteor is the gun we’re looking at.
The Meteor first came to market in 1959 and has matured through 7 Marks, or major design changes. The Mark VII is still being made today. The Blue Book of Airguns lists what they refer to as the “Meteor Super” (it’s actually called a Super Meteor) as a separate model that ran from 1967 through 1973; but in truth, the Super designator was applied to Meteors of several Marks for much longer. They weren’t separate models. They were rifles that had small upgrades of a few parts, with no real change to the powerplant.
Actually, my rifle is a Super Meteor Mark IV in .177 caliber. They were made from 1973 through 1978 and are identified by the NG letter prefix of the serial number. What makes the rifle a Super is a stock with a slight Monte Carlo profile (stepped comb), a raised cheekpiece, a ventilated, thick, black rubber buttpad and a hooded front sight — although the hood did not come with the gun I bought. It doesn’t say “Super” anywhere on the rifle, and you have to look at the design features to distinguish it from a regular Meteor.
The butt has a slight Monte Carlo profile (stepped comb) and a raised cheekpiece. The ventilated black buttpad is the third clue this is a Super Meteor.
The name on the spring tube says Meteor. The “Super” designation is not written on the gun.
The serial number prefix “NG” designates this as a Mark IV .177 Meteor/ Super Meteor, 1973-1978.
Out of curiosity, I did load one pellet and try the gun while writing this report. The discharge was violent, and the pellet never left the breech; so, the gun needs immediate attention. I’ll have to fix it before I can move on to test velocity and accuracy.
Size-wise, this Super Meteor appears and even seems a bit larger than a Diana model 27, though with the overall length of 40-1/4 inches, it’s actually one inch shorter than the 27. It’s the extra-thick stock that disguises the gun’s size. The barrel appears to be 18-1/2 inches long, though it’s backbored at the muzzle by 1.10 inches.
The rifle weighs 5 lbs., 14 oz., though that’s subject to deviate slightly depending on the weight of the “select Scandinavian beech” stock. Holding it reveals it to be light at the muzzle, which I don’t like in a rifle. But it isn’t bad and can certainly be tolerated.
The trigger is adjustable, surprisingly enough. A screw behind the blade allows for some kind of adjustment on which I’ll report later. Right now, it’s set up as a single-stage with a crisp let-off of 4 lbs., 11 oz.
Behind the trigger blade is the single adjustment screw.
There’s no safety, so it’s possible to fire the gun with the barrel broken open. I did this while restraining the barrel to test the trigger because, as I mentioned, the gun is in no condition to be fired. I really like the absence of a safety.
The barrel is rifled, and this one currently looks like 40 miles of rough road. A tactical flashlight reveals lots of dirt and grime. It needs a serious cleaning.
The muzzle is backbored 1.10 inches.
The breech seal appears to be a formed synthetic o-ring. If I can find a replacement, I’ll get it. Otherwise, I’ll face this one flat and shim it underneath.
The synthetic breech seal has flattened over time.
The front sight is a steel blade with a bead at the top, pinned to a plastic ramp. The ramp is held to the barrel by a screw that’s under the steel blade. According to John Walter’s book, The Airgun Book, third edition, the front blade is reversible and can also be a square post.
The front sight blade is supposed to flip and a square post will replace this bead.
The rear sight is adjustable in both directions. It appears to have very fine click detents that may be gunked up with crud because they make almost no sound at present. The entire unit needs to be taken off the rifle, disassembled and cleaned.
Rear sight is plastic and steel. Adjusts in both directions.
The rear sight is constructed of plastic and steel parts and has a notch that’s reversible. Right now, the vee notch is installed; but if I reverse the front sight, I’ll also flip the rear to the square notch. I noticed that there’s some vertical movement with this notch, as well, and I’ll use that if I need to. These older sights were things of ingenuity compared to what’s on the market today.
The rear sight has a choice of 2 notches. And the screws allow for a height adjustment.
I have to be open-minded about this rifle because so far it’s turned out to be the turkey I always believed these to be. Fortunately, Hiller’s third edition of Air Rifles has an exploded parts diagram of the Mark IV Super Meteor. Just by looking at it I can see the rifle disassembles in a straightforward way, so that will be the subject of my next report. Hiller also mentions that if the stock screws are over-tightened, they tend to pull the action forks apart, causing looseness at the breech. Apparently, this is a design weakness of the vintage Meteor series.
Once the rifle is apart, we’ll get to see what it needs to put it back into operation. Then, I can order the parts and, after an overhaul, we can progress to shooting.