Posts Tagged ‘dynamic’

A while back, I mentioned the good luck I had trying Dynamic SN-1 non-lead pellets in my Beeman R7 air rifle and RWS P5 pistol. A while later, I had the opportunity to chronograph the SN-1 pellets shot out of the P5 pistol, and I found that they were averaging 532 fps and varying no more than 2 fps from shot to shot! When you realize that the P5 is a spring-piston pistol, all of a sudden the light bulb comes on that this is truly astounding consistency.

Emboldened by this success, I decided to try the Dynamic SN-1 and TM-1 pellets in my recoilless RWS 54 .177 rifle. I set up the range in my yard at 39 yards (the farthest distance I can safely shoot at home). Shooting from a rest, I banged off a few shots with Crosman Premier Heavies (CPH, nominally 10.5 grain), the pellet that had produced the best accuracy with this rifle in the past. Then I shot the TM-1 pellets (9.5 grain) and the SN-1 pellets (7.95 grain).

Measuring the groups, I found the three different pellets produced very similar results. The groups from the CPH and TM-1 pellets measured 25/32”, while the group from the SN-1 pellets measured 26/32”. When I chronographed the three pellets from the same rifle a few days later, I got the following results. CPH: high 813 fps, low 798, average 804. SN-1: high 989, low982, average, 986. TM-1: high 835, low 825, average 832.

Okay, I thought, how will Dynamic pellets work in another of my favorite guns, a Steroid Sheridan Blue Streak? I shot groups at 13 and 25 yards with both JSB .20 pellets (the pellet that the Steroid ‘Dan “likes”) and Dynamic SPC-5 and got very similar accuracy results at both distances. When I got to the chronograph, I forgot to bring the JSB .20 caliber pellets (shame on me), but here are the results I got. At eight pumps, the Steroid Sheridan was sending Benjamin .20 cylindrical pellets (14.3 grain) downrange at 672 fps average (high 677, low 669). It was launching .20 Crosman premiers (14.3 grain) at 673 fps average (677 high, low 671). And it was blasting the SPC-5 pellets (12 grain) through the traps at 721 fps average (high 724, low 717).

I got excellent accuracy from the Dynamic pellets in my R7 rifle, P5 pistol, RWS 54 rifle and Sheridan Blue Streak, but not every airgun shoots them well. I got just awful accuracy shooting SN-1 pellets in my FWB 150 match rifle, and, oddly, the same thing happened with my modern vintage Sheridan Silver Streak.

From my small experiment, I conclude that some air rifles and pistols will shoot the Dynamic non-lead pellets very well, producing good velocity and higher penetration than lead pellets. While they are more expensive than conventional lead pellets, compared to match grade rimfire ammunition, the Dynamic pellets are a downright bargain and worth experimenting with.

Til next time, aim true and shoot straight.

— Jock Elliott

The Beeman R7 is a classic air rifle well loved by many airgunners.

When I first began to get interested in adult precision airguns nearly 10 years ago, I remember reading a quote from an airgunner who said, in effect, “Of all the airguns I own, the Beeman R7 would be the last one I would sell.”

At the time, I didn’t really “get” what he was saying, but now that I’ve owned an R7 for a few years, I understand what he meant completely. The R7 is a true classic, an air rifle that just about all airgunners love.

Here’s why — the R7 is a relatively small and light air rifle that generates around 6 fp of energy (the same energy level usually found in Olympic match air rifles). The R7 measures a hair over 40 inches from end to end and weighs 6.1 pounds. The upshot is that there is roughly one pound of weight per foot-pound of energy, and that makes the R7 extremely easy to shoot well.

(An aside: there are two versions of the R7, one in .177 cal., the other in .20 cal. I have experience only with the .177 version. A casual survey of some of my shooting friends indicates you can’t believe the 700 fps velocity figure that Beeman puts out for the .177 version; most untuned R7s shoot in the high 500s, say, 560-590 fps, with “normal” weight pellets.)

To get the R7 ready for shooting, you crank the barrel down until it latches (it takes less than 20 pounds of cocking effort), stuff a pellet into the breech, return the barrel to its original position, click off the safety, and you’re good to go. The R7 is equipped with Weihrauch’s famous two-stage Rekord trigger which is very crisp and nicely adjustable.

My experience – and that of many R7 shooters I’ve spoken to – is that the R7 is remarkably UN-finicky about how you shoot it. You can hold it loosely or hold it tight; shoot it off a rest or from a sitting position. Whatever you do, it seems, the R7 shoots well. One shooter I met said, “Why do I pull my R7 tight into my shoulder like a powder-burning rifle? Because I can!”

And there is a whole lot you can do with an R7, like shoot field target or defend the birdfeeder. My brother-in-law won the Hunter Class at a Field Target match while shooting an R7. He beat me, and I was shooting another R7, and so was the fellow who took fourth place. We’ve spent many happy hours doing high-accuracy plinking with our R7s.

Recently Greg at Airguns of Arizona asked me to try some Dynamic SN-1 non-toxic “air bullets.” “I think you’ll like them,” he said. “We’ve had very good luck with them.”

Frankly, I had my doubts. I had tried some ultra-light non-lead pellets previously and while they were very fast (nearly 100 fps faster than CPLs in my R7), the accuracy was dreadful at anything beyond close range.

Nevertheless, the SN-1 pellets arrived, and I brought them with me the next time I visited my brother-in-law to do some shooting with our R7s. I shot for a while with Crosman Premier Lights (CPLs) and then gave the SN-1 pellets a try. The SN-1s weigh (nominally) 7.95 grains, which is roughly the same as the CPLs. I was shocked to find that, at 50 feet, not only did the SN-1 pellets group very well, they were hitting the same point of impact as the CPLs!

Emboldened by this experiment, I tried the SN-1 pellets in an RWS P5 spring-piston pistol. This time, I did get a point of impact change, but the SN-1s grouped very well, better in fact than the pellet the P5 previously “liked.” Casual experimentation with metal cans indicates that the SN-1 pellets deliver much better penetration than conventional lead pellets.

The bottom line is that I was very pleasantly surprised by the Dynamic SN-1 non-lead pellets and plan further experimentation with them.

Til next time, aim true and shoot straight.

Jock Elliott