Why do airgunners need high-magnification scopes ?

by Tom Gaylord, a.k.a. B.B. Pelletier

Today’s report is for blog reader J-F, who asked this exact question: “Why do airgunners need high-magnification scopes?” And let’s define high magnification as anything over 12x. That’s arbitrary, of course. It’ll be arbitrary no matter where you set the limit. I set it there because that’s 3 times the power that the average deer hunter’s scope had in the 1950s.

But airgunners delight in 24x, 32x, 40x and even 60x scopes. I know because I’m one who does. But I also know why I want this level of magnification and what purpose it will serve.

Braggin’ rights
One reason for high-magnification scopes is pure bragging rights. Like the pilot who has to have the largest, most complicated watch, the biggest scope gets the most attention — at least in the minds of the guys who think that way. And I know for a fact that some people do think that way; I’ll tell you how I know in a moment.

Field target
One good reason for owning a scope with high magnification is so you can use it to determine the ranges to targets. No one needs to do that more than the field target competitor. Rangefinders are not permitted in field target matches, but the parallax adjustment on a scope provides something very close because it focuses the scope when the distance to the target is dialed in. This isn’t a true rangefinding function like you might find on a coincidence rangefinder built especially to do this, but it’s close enough to satisfy most people. And, it’s all you’re allowed to do.

Field target courses run from 10 yards to 55 yards, so the scope has to work in those boundaries. You want a scope that has most of its adjustment range between 10 and 50 yards. The best field target scopes are made that way — with 3/4 of the adjustment (the distance that the adjustment wheel or bell is turned) between those 2 distances.

To determine ranges accurately, you have to be able to see when something very small comes into sharp focus at your desired distance. To see things that small, you need as much magnification as you can get with the image still being clear.

field target
The kill zone of this field target is the small hole above the dime. Your pellet has to go through the hole without touching the sides to score a point. This is why field target competitors need to know how far away the targets are!

Let’s get something clear right now. Just because a scope adjusts to 40x does not mean that you can use it at that setting. I own a Tasco Custom Shop 8-40X56 scope that cost $650 back in the 1990s, and it’s unusable above 30x for anything other than a bright target in direct sunlight. Field targets are often shot in the deep woods, where the light is either low or dappled with bright sun and dark shadows. In that light, my Tasco isn’t useable above 30x.

There are cars whose speedometers go up to 120 m.p.h. It doesn’t mean the cars go that fast. Same is true of scope magnifications levels. If you want to see at 40x in a field target setting, you’re probably going to have to pay close to a thousand dollars for your scope.

Small field of view
Here’s how I know that some people buy big scopes just to be envied. On several occasions, I’ve seen a field target competitor start the match and then not be able to find the targets! They sit there burning everyone’s time, looking though their powerful scopes but are unable to see the targets because everything looks so big and dark through the lens. This got so bad, in fact, that AAFTA (the American Airgun Field Target Association) started enforcing the time rules that typically give a competitor 5 minutes per 2-target (4-shot) lane.

The reason this happened is because these guys had never looked through their scopes at anything besides paper sight-in targets until the day of the match. They assumed things would be as they always were; and, of course, they aren’t when you move from a well-lit range into the woods.

The other thing powerful scopes do is bring out the anal side of some shooters. They will sit and range and rerange to the target, acting like some clueless manager examining a spreadsheet. They can’t get off the dime and take the shot because — what if they were wrong?

On the other hand I suffer from the opposite affliction. I don’t take my time and just charge on through the course. Great instincts for a first-wave armor officer — not so good for longevity on the battlefield or to win a match.

Benchrest shooters
The other shooter who really needs a powerful scope is the benchrest shooter. “Aim small, miss small” is their motto. A few weeks back, I showed you my 100-yard box targets that help me sight my most accurate scoped rifles.

printed box target1

My best centerfire rifles are, in descending order — my Rock River AR-15, which I built from parts; my HW 52 in .22 Hornet; and my Savage 1920 bolt-action in .250-3000 Savage. The AR has the Tasco 8-40X56 scope on it; and even on sunny days, the power never goes above 30 or the scope gets foggy. The Weihrauch Hornet has a vintage Weaver K10-T that’s a fixed 10-power scope with an adjustable objective. The Savage is carrying a vintage Weaver V9-W 3-9X32 variable with a widefield view.

three rifles
My 3 most accurate centerfire rifles are (from the top), AR-15, .22 Hornet falling block and .250-3000 bolt action.

One of the main reasons two of these scopes are vintage is that they have fine reticles that are perfect for my box targets. I can see when they split the box, even at these relatively low magnifications. Would I like more power? You bet! But I need to get it in scopes that will fit in fairly exotic rings and clear the guns when they’re mounted. That’s a tall order because high magnification usually comes with a large objective bell.

Who doesn’t need high magnification ?
As a general rule, hunters don’t need high magnification; and they do need the wider fields of view and brightness that come with lower-powered scopes. Varmint hunters might disagree with me on this because they’re more like benchrest shooters, but squirrel and rabbit hunters will probably agree.

Exterminators can also get by with lower power, with a few exceptions. When they hunt quarry that’s extremely wary, such as rats can sometimes be, they may want more power to place their pellets precisely on the little part of the animal that does show. But we’re talking 12-16x here — not 40! But the guy who’s killing birds in a discount store or mall at 3 a.m. can get by with a good 6x scope most of the time.

So, J-F, the answer to your question is a combination of things. There are those airgunners who actually do need high magnification, then there are the wannabes who have it because it’s cool. And then there are the first-time buyers who may get it because they have no idea what they’re getting into, and high magnification sounds good.

Beeman R1 – Part 3

by B.B. Pelletier

Part 1
Part 2

Testing and photos by Earl “Mac” Mcdonald

Well, Mac finished his test of the .22 caliber Beeman R1, and he learned a lot in the accuracy portion. As promised, I’ll tell you what he learned that he could not believe until he demonstrated it for himself.

First things first, though. The first thing Mac learned was that he had trouble seeing through the Bushnell 4-12×40 scope to the point that he became disturbed about it, so he removed it and mounted the Leapers Accushot 4-16x56AO scope he used in the test of the HW50S rifle. Once that scope was on board, he was satisfied and got to work testing accuracy.

No accuracy?
Only there wasn’t much to speak of! He was surprised that the best the rifle would do at 30 yards was groups of more than one inch. He called and asked my advice. He wondered if the R1 is a hold-sensitive rifle, and I told him it’s very hold-sensitive since it’s a breakbarrel. Most breakbarrels are. They require the utmost skill with the artillery hold to shoot their best.

I told him my special technique of laying the rifle on the backs of my fingers, with my off hand touching the triggerguard. This makes the rifle muzzle heavy, and the R1 is already a very heavy rifle, so this influence is magnified. Mac shot this way and noted that the rifle dug into his fingers quickly due to the weight.

But that wasn’t the end of it. I also told him to clean the barrel with JB Non-Embedding Bore Cleaning Compound on a brass or wire brush. You veteran readers know the drill by now, but for the new readers among us, it works like this.

Cleaning the barrel
Using a solid cleaning rod and a brass or bronze wire brush, you load the brush with J-B Bore Paste and then clean from the breech to the muzzle with 20 strokes in each direction. Push the brush up from the breech until it exits the bore, then pull it straight back again until it completely exits the breech. Do this 20 times in both directions, then remove all residue from the bore until it’s clean.

Mac balked at this procedure, because it didn’t make sense to him. It took us a week to get the necessary cleaning supplies to him, during which we discussed this procedure several times. How could this possibly help, he wondered, when the bore was already clean? He had run cleaning patches through it until they came out clean. I told him that the bore may look shiny and clean, but that it really was loaded with sharp burrs on the lands that needed to be removed. He would discover this when he cleaned the barrel himself.

The day finally came when he was able to clean the bore as described here, and he was shocked at what he found. The brush was extremely difficult to run through the bore for the first three passes in both directions. Then it became noticeably easier and he finished the cleaning with ease. This is normal. I’ve had barrels fight me with as many as 11 passes of the brush before they became smooth, but the transition always happens and the barrel is easy to clean from that point on. You can feel that the major obstructions have been removed.

After cleaning, Mac tested the rifle a second time and was shocked at the first groups that measured smaller than one-half inch! That’s 10-shot groups of .22 caliber Crosman Premiers going into less than one-half inch at 30 yards! Try to do that sometime with any spring rifle you own if you think it’s easy.

The half-inch groups did not last, though. He was shooting them intermittently while he was chronographing the gun for the velocity test, and before long they began to enlarge. They soon exceeded an inch in size. Mac called me asking what to do and I advised him to clean the barrel again. The Crosman Premier pellet is made from lead hardened with antimony; because of that, it deposits lead on a rough barrel very fast.

So, he cleaned the bore for the second time, and this time the accuracy seemed to return to stay. There were no more half-inch 10-shot groups, but they did cluster around three-quarters of an inch. Below is what Mac wants to show you — before cleaning and after. He’s discarded the half-inch groups as unrepresentative of the real accuracy potential and will show groups before cleaning and after two cleanings.

10 JSB Exact Jumbo domes before cleaning.

10 JSB Exact Jumbo domes after two cleanings.

10 RWS Superdomes before cleaning.

10 RWS Superdomes after two cleanings.

10 Crosman Premiers before cleaning.

10 Crosman premiers after two cleanings.

Effects of cleaning with J-B Paste shown for the first time!
Mac was surprised at the outcome of the cleaning. This was the first time he had seen what J-B Paste can do to a new airgun barrel. I’ve been preaching this remedy for many years — ever since Ben Taylor of Theoben told me about it and I tried it for the first time. But this blog report is the first time I believe that the results of cleaning a new barrel have been shown so dramatically. And that’s the surprise I promised you. Some of you already know this from your own experiments, but far too many airgunners simply do not believe this treatment works. And here are the graphic results that prove that it does.

Mac’s assessment of the R1 is that it’s a nice air rifle, but a touch too twitchy for his tastes. He says that if he owned one, he would detune it for better consistency, which is exactly what I did with my personal R1. If you want crushing power in a spring-piston air rifle, get an RWS 54 that delivers it without the hold sensitivity of a breakbarrel. If you own an R1, it’s best to either learn how to shoot it with the proper artillery hold or else tune it back to softer power and recoil.

Mac also commented on the Rekord trigger in his test rifle. He says it broke cleanly at 54 oz., which is not light by anyone’s calculation. But he felt that the weight of the rifle, plus the glass-rod crispness of the trigger more than offset the pull weight.

His final observation was that once the Leapers 4-16x56AO SWAT scope was mounted on the rifle, everything seemed fine.