Posts Tagged ‘laser’
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, you’ll get a twofer — thanks to blog reader Les, who asked about adjusting dot sights and lasers. I said I would test the Umarex MORPH 3X with a dot sight, so I thought I’d combine that test with instructions on how to adjust the sight to hit the point of impact.
I hadn’t considered testing a laser on the Morph, but I can certainly describe how to do it. I’ll get to that at the end of the report.
The dot sight
What is a dot sight? Well, once you understand what it is, you’ll understand that adjusting one is the same as adjusting a scope. Because that is what a dot sight is — a scope without the magnification (usually) or the crosshairs!
On scopes, the crosshairs or reticle are lines that you see through to see the target. By adjusting where the lines are, you can adjust where your shot strikes the target. I think most folks understand that.
All a dot sight does is substitute a glowing dot of light for the center of the crosshairs. In other words, the intersection of the crosshairs is replaced by a glowing dot of light. Put that over what you want to hit; and if the sight is adjusted properly, it works the same as a scope. No one other than the shooter can see the dot.
The glowing dot is different than the crosshairs because it isn’t a solid object. It’s a reflection on the surface of a lens that appears in your line of sight. You can see it because the reflection is physically there, but it isn’t anything that can be touched, anymore than you can touch an image in a mirror. But you can adjust where the dot is seen by adjusting the lens that reflects it.
If you have a dot sight, try looking through it and moving your head around from side to side and up and down. You’ll note that the dot moves against the target quite a bit. That’s because you’re moving your eye, and that changes where the reflection of the dot appears to be. You can do the same thing with the reticle of a scope, but not to the same extent. Where a scope reticle will appear to move just a little against a target, a dot appears to move more. That’s the difference between looking at something that is physically there and something that’s just reflected off a curved piece of glass.
That should warn you that dot sights have a lot of parallax problems and require consistent eye placement for every shot. The same is true with open sights, but open sights give cues when the alignment isn’t right. The front sight moves relative to the rear sight. But a dot sight is just a single point of reference, so you can’t see the misalignment as easily. Therefore, the placement of your head is extremely important if you expect to hit the target every time.
What I’m saying about dot sights applies to the older tube-type sights, like the one I’m using in this test. I suspect, like all technologies, dot sights have become more precise in recent years. But my experience is with the older style.
Don’t get the idea that dot sights are impossible, though, because they’re not. Though they are somewhat dicey to use. It’s not as bad as ice skating on stilts.
Dot sight adjustment
Now that you understand what a dot sight is, you should know that it adjusts in the same way as a conventional scope. One knob controls the up and down movement, and the other controls the left and right. Sighting-in a dot sight is no different than sighting-in a scope. You select a point of aim, which you hope will also be the point of impact and hold on it as you shoot. If the pellets strike the target low and to the left, the sight has to be adjusted up and to the right.
Like a scope, it helps to begin sight-in of a dot sight at a close target. I like starting at 10 feet away, and I adjust the sight until the pellet is striking the target on the centerline and as far below the point of aim as the center of the sight is above the center of the bore. Then, I know I can back up to 10 meters, and I’ll be on paper. I may need to refine my sight adjustment a little when I shoot at 10 meters, but this is the fastest way I know to sight in an airgun — especially one that cannot be boresighted.
But what if you’re at a public range and can’t shoot at 10 feet? That’s when I put up a 2-foot by 4-foot light-colored paper backer and staple my target in the center of that. Even at 50 yards, there’s a good chance my shots will land somewhere on that big piece of paper if I shoot at the center of the target. When even that fails, I enlist the help of a spotter to watch the berm. I shoot at a dirt clod we can both identify and he watches through the binoculars that I always carry to see where my bullet strikes relative to the dirt clod.
Tasco Pro Point
I mounted a Tasco Pro Point dot sight to the rail on top of the Morph and was ready to commence sight-in. The Pro Point is a dated design, but it was good quality 15 years ago and still works well today. The amount of parallax is small for a dot sight, but I still watch my head placement every time.
It was very easy to install the Pro Point on the Morph. The Weaver bases on the Pro Point clamp right to the Morph’s rail, and clamping pressure plus the keyed cross-slots hold the sight in place.
Tasco Pro Pont dot sight fits the Morph quite well.
I think it was Victor who asked me how I stop the BBs from bouncing back, so today I thought I’d show you. I photographed my target setup, so you can see the light and the Winchester Airgun Target Cube with the Shoot-N-C target pasted on its front.
Absolutely no BBs bounce back using this setup. The target cube is starting to slough off small pieces of styrofoam, now that over a thousand shots have hit it, but nothing gets through it and nothing bounces back.
On to the shooting
At first, I shot the Morph in carbine form offhand at 15 feet (I’m using Umarex Precision steel BBs). I dialed the red dot intensity up to No. 8; because when the Shoot-N-C target turns green, it’s so bright that it masks the dot. Even at the 8 setting, I could barely see the dot against the target, once it changed from black to green (or yellow — I can’t tell…I’m colorblind.). Of course, when you shoot offhand, the dot seems to move all over the target — even at 15 feet.
Seeing the accuracy of the carbine made me want to shoot the gun rested. I brought in a kitchen chair, turned it around and used the back as a rest for my next group.
Seeing this result made me want to see just how good the gun could shoot. So I adjusted the dot to the right and shot another 10 rounds.
Let’s back up
Seeing how good the Morph could do at 15 feet prompted me to back up to 25 feet and try again. This was also a rested group of 10 shots. I adjusted the sight a little more to the right for this one.
I was running out of the smaller bulls, but with a dot sight that poses no problem. Since the BB goes where the dot is, the size of the target has no influence over where you hit, as it would with a peep sight or a post and notch using a 6 o’clock hold.
At 25 feet the group opened up a bit, but it’s still respectable. There’s a single BB above the bull in the cardboard. This is a larger bull; but with a dot sight, that doesn’t pose a problem. The sight is still not far enough to the right, and notice that the impact point has climbed just a little. The orange dot in the center of the bull was the aim point.
I don’t have a laser that will fit on the Picatinny rail of the Morph, so I can’t mount one, but let’s talk about how a laser differs from a dot sight and a scope. A laser actually shines a light on the target. What you see is reflected from the target — not from a lens inside an optical device. The laser dot can be seen by everyone — not just by the shooter — the way a dot sight can. And because the laser dot actually hits the target, there can never be any parallax. What you see is actually there, on the target.
With a laser, there’s nothing to look through. Think of a laser as a very powerful flashlight. It isn’t actually a sight. It’s more of a designator.
A laser is adjusted just like a scope or dot sight, except you’re adjusting where the light actually falls. So, the procedure is to use a separate sight to sight-in the gun, then adjust the laser so it’s on the target when the other sight is.
Adjusting a laser is usually different than adjusting a scope or a dot sight. There aren’t click adjustments, as a rule, but there are screws that push the laser tube in the direction you want it to go. This may be backwards of how a scope’s adjustments move, so read the laser’s manual before you start adjusting.
Distance is limited
Lasers can’t be seen very far on bright days, so they’re limited in distance. You can look at them through a scope which increases the distance at which the dot can be seen, but even then the laser is a limited-range sighting aid. A 50-yard shot is very far for a laser. Most shooters set them up for very close shots, like 20-30 feet. They use their other sights for longer distances.
Les — I hope this helps you with the sight-in procedure for dot sights and lasers. Let me know if you have more questions.
The Morph 3X rifle and pistol is a unique airgun that’s accurate and powerful at the same time. The double-action trigger-pull may take getting used to, but it poses no problem as far as accuracy goes.
I find the Morph accurate, conservative of gas and trouble-free to operate. If you want an accurate BB gun that also has power, check this one out.
by Tom Gaylord, a.k.a. B.B. Pelletier
Photos by Earl “Mac” McDonald
The SHOT Show is not a gun show — though that is what many attendees call it, and the mainstream media that doesn’t attend also calls it that. Instead, it’s a happening — to use a 1960′s term. Or it’s a Middle Eastern open market. The big booths house the recognized names like Colt, Winchester and Crosman. Their booths are two stories tall with signs hanging from the ceiling that you could see a mile away if there weren’t other signs hanging in front of them.
But the real drama of the show isn’t at those booths. People already know what to expect in those places. It’s the little out-of-the-way booths hugging the walls that have the surprises. I always set aside some time just to cruise the aisles, looking for some rocks to turn over.
I’ll be walking along a narrow aisle and someone will step out to stop me. Then, in a conspiratorial tone, he leans over and says something like, “Don’t you just hate it when your ice cubes melt and dilute your drink? Cold Bars have solved that problem forever. These are sanitized stainless steel bars that retain the cold almost as well as water, plus they’re reusable forever. Put three of these in your scotch and soda, and it’ll be as fresh and strong after 20 minutes as when it was poured. When you finish the drink, just pop them in the freezer for 10 minutes…and they’re good to go again. While you wait, you use the second set of three bars in your next drink! Nothing could be easier.”
This guy is serious! You look at his spartan booth and realize that he has poured everything into this venture because at some point watery drinks pushed him over his tipping point. When he bounced the idea off his wife and friends, they all agreed it was the next big thing. They had no idea he would mortgage the house and put his life savings into it!
So, here he is, in a narrow aisle of a large trade show, hawking his brains out to people who, for some reason, just don’t seem to get it. Who doesn’t want cold, undiluted drinks?
Think I’m exaggerating? Attend a trade show and walk the aisles some time.
Why do I plod through these pathways of personal misery? Because next to the stainless steel ice cube booth there ‘s the G+G Airsoft booth that has the best action target I’ve seen in a long while. It’s a lighted rubber hemisphere that’s computer-controlled to react to being hit by an airsoft BB. You can turn the light on or off, depending on how you have programmed it.
They call it the MET Unit, which stands for multifunctional electronic target. It can exist as one single target or they can be strung together in up to 25 targets for a prolonged target array.
The MET Unit is from 1 to 25 programmable lights that turn off or on when hit by an airsoft BB.
The wires between targets can be up to 50 meters in length, which allows them to be set up in a tactical course and either light up at some random time until hit or stay on for a programmed time and go off after the time is up or when hit. Two competitors can shoot at the same target and change the color of the lights when they hit it, establishing a duelling target.
The individual target will sell for $66 or 5 for $250. It looks like a great way to have fast-action fun with airsoft guns. They can take hits from AEGs shooting 0.20-gram BBs at up to 450 f.p.s. Naturally, they’re not robust enough for even the lowest-powered steel BB or pellet guns.
Umarex is now branding airguns under their own name. This year, there are three new long guns: the Octane is a breakbarrel with a Reaxis gas spring and SilencAir, which is a baffled silencer; the Surge is an entry-lever springer breakbarrel; and the Fusion is a CO2 pellet rifle, and it also has the SilencAir noise dampener. We’ve seen the Fusion before, branded as the Ruger LGR, but Umarex tells me the Fusion is a Gen 2 upgrade and quite different. I never got the chance to test the LGR, so I’m looking forward to testing the new Fusion as soon as possible.
The Fusion is a new CO2 single-shot rifle from Umarex that sports a 5-chamber noise dampener.
I spent an hour at the Leapers booth this year. The most important thing I wanted to see was the new scope with an internal bubble level. It’s a 4-16x in a 30mm tube, and it looks exactly like what the doctor ordered for those long-range targets we love to shoot. They’re working hard to get it to market this year, but it won’t go out until they’re certain of the quality. Putting a bubble level inside scopes on a production line is apparently quite a challenge…but one I’m sure Leapers will do correctly.
The entire line of scopes have been upgraded with finer adjustments — many of them 1/8-minute adjustments — and greater repeatability. They have a broad range of adjustment in both directions, and their production models are even exceeding the maximum limits they established! All leaf springs have been replaced with coil springs to increase adjustment precision and repeatability.
But the WOW factor comes on the stuff you can see. How about a 3-9x scout scope (10-inch eye relief) with a wide field of view? That is the big trick for scout scopes, and I saw a beauty mounted on an M1A — though it would be just as correct on a Mosin Nagant.
Leapers new scout scope has a full field of vision — something scout scopes are not known for.
Another surprise from the folks in Michigan is the smallest tactical laser I have yet seen. I asked Mac to photograph it next to a quarter for scale.
Leapers new laser is the smallest I have yet seen. That’s a quarter next to it.
Back to the Crosman booth to show you what the new Benjamin pump looks like when the handle is raised. I didn’t expect the huge reception this pump got when I showed it the first time this year. Please note that it has not one but two pump tubes. This is a 3-stage pump — the same as the current pumps, but this one compresses a bit more air with each stroke. I’ll have more to say about it when I test it.
Maybe this view will help you understand how the new Benjamin pump magnifies the force you put into each pump stroke.
I’ll close with a last look at the Hatsan booth. They have the AT-P carbine and AT-P1 pistol…and both are precharged pneumatics. They’ll come in .177, .22 and .25 calibers that each have hunting levels of power. These are repeaters with circular clips and adjustable Quattro triggers. The sights are fiberoptic, and there are provisions for scopes. The air cylinders remove, and spares will be available as options.
For those who are looking for hunting air pistols, I think these two should be considered. I’ll work hard to review them for you as soon as possible.
The Hatsan AT-P2 Tact (left) and the AT-P1 are exciting new PCP airguns.
Leaving the show
As Edith and I left the show we passed by one final booth. The guy is selling Instant Water for survivalists. Just drop one of his pills in a bucket of water and — Presto! — instant water. Why I can’t think of things like that?
by B.B. Pelletier
First, two announcements. Don’t miss the latest video episode from Airgun Academy. Episode 13 is about adjusting scopes, ironically enough. I say ironically in light of what we’ve been doing with the FWB 124. Also, the October podcast is up. It’s about selecting the right youth airgun.
Now, it’s time for today’s report.
Ever since I saw it at the SHOT Show in January, I’ve wanted to test the BSA Laser Genetics ND-5 laser designator for you. Now that I have it in hand, I’m slightly stumped how to proceed. How would you test the first atomic bomb, if some of your developing scientists told you it would destroy the world? How do I test a flashlight (I know that BSA Optics hates for me to call it that, but it’s the best analogy I can give) that shines brightly for five miles (8.05 kilometers)? And who needs such a thing?
Well, I don’t really care who needs it, I WANT it! The ND-5 is a long-distance laser designator (a flashlight) that shines a highly visible green laser beam (532 nanometers wavelength) over unbelievably long distances. And there’s a simple thumb switch to adjust the collimation of the beam, which is just fancy talk for making the beam wider or narrower. A round button on the end of the barrel turns the light on and off, and the lens bezel is made to crack skulls, just like a tactical flashlight.
The beam can be set to narrow, which is hundreds of times as wide as a normal laser beam. Because it’s coherent light, it maintains this tight beam out to a far distance. While the above picture seems to show a white light rimmed in green, it’s actually solid green. The laser was so bright that it overwhelmed the camera.
So, this is really a night vision device. And it’s one that doesn’t bother game animals. You can see the eyes of animals 1.5 kilometers away as clear as day when you shine the beam on them. I saw this in a demonstration video in the Gamo booth at the show. Okay, so typical NV gear costs $500 and more and gives you visibility out to several hundred yards. Or, you can buy one of these for $330 and extend your night vision by several miles. You decide. Oh, and you don’t have to wear this one. You carry it like a flashlight and use it the same way.
The designator comes in a handy padded carrying case that you’ll want to keep it in between uses. It uses 2 CR134A camera batteries to give up to seven hours of continuous use. It’s sealed with o-rings to keep water and dirt out, and the body is made from tough aluminum.
One thing you’ll notice if you ever go to the SHOT Show is the proliferation of lasers. They’re everywhere! If you watch the darkened ceiling in the trade show main exhibition room, you’ll always see one or more laser dots walking along the girders and lights. But the ND-5 is to a normal laser like a Peterbuilt tractor is to a Mitsubishi pickup! The main display hall is not big enough to contain the power of this instrument. Even in a hall that measures a half-mile in length, the ND-5 is just starting to get the wind beneath its wings by the time it slams into the far wall. And that’s with all the lights turned on! You ought to see it in the dark!
The dark is where it’s designed to work. I can imagine varmint hunters, for instance, shining a light out and sweeping the country in front of them to determine whether they’re calling in a coyote or a cougar. It would make a difference whether you make ready your .17 HM2 or decide to use the .257 Roberts. Or at least get the .357 Magnum ready in case there’s a screwup and you become the hunted!
How can I show this more effectively?
So, I’m looking at ways I can show you this wonderful device, or at least how I can test it in a way that my description sounds interesting. If you can come up with anything to help me, please let me know.
Now for something completely different
I’ve been wanting to do a blog for awhile about reloading firearm cartridges. Just a one-parter to show the basics of what goes into turning a fired case into a loaded cartridge. I was out at the range yesterday and shot up some .45 Colt ammunition that I reloaded using the simplest of hand tools.
I loosed a couple dozen slugs from my Ruger .45 Colt after reloading them the night before.
I want to do this report so we can talk more about ballistics, and I can use some firearm analogies that apply to airgunning but whose meaning would be lost if you don’t know how a cartridge works. For example, when reloading, case volume comes into play. There’s a relationship between the filled and empty volume of a cartridge case and the type of gun powder being used that determines the efficiency of the round created. And, you might get higher velocity if, before you fire each shot, you elevate the muzzle of the gun to get the powder piled up back near the primer flash hole. But do you even know what a primer flash hole is and how it works?
Well, that exercise is analogous to a spring-piston gun that’s most efficient when held in one orientation rather than another (i.e., held normally as opposed to held upside-down). Or held loose versus tight.
So, may I write this one report to explain how a cartridge is reloaded without offending anyone? I know it’s off the main track of airgunning, but it really isn’t as far off as it seems.