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and it fi t the chamber nicely. We fi red a test round and everything worked well, including the case extraction. My breath was coming easier now after passing the extraction test! Maybe my imagination was working overtime but the “parts gun” appeared to have a touch of class. For starters I had loaded 31
rounds for testing (seven, three-shot groups and two, five-shot groups) using three powders and fi ve different bullets. The smallest group was 0.513", with the largest being 0.625". Not bad but not what you expect from a .22 PPC. (There was a day when I would have been tickled to death with that kind of performance, but those days are long gone.) The average for the nine groups fi gured out at 0.551". Not really bad but not what I was looking for. Best group was with 28.7 grains of 8208XBR. Other powders tried on the fi rst go around were A-2460 and VV-135. Bullets had been seated very deep with no regard for actual cham- ber measurements. The second test firing session
involved 11 groups with eight, three- shot and three, four-shot. Powders were H-322, Varget, and A2230. Bullets were seated much farther out, about ten-thousandths from the
lands and grooves. The results proved dramatically different from the fi rst testing. The smallest group measured 0.128" and the largest 0.808". Small- est group was fired with 26 grains of H-322 with a 50 grain Nosler B.T. The average for all 11 groups was 0.414". Eliminating two groups that the rifl e apparently did not like, then the average shrinks to 0.323". (Those two eliminated groups could not be operator error — could they?) The stage is set for the third
testing which will feature three new powders — VV 133, N-201, and H-4198. I’ll also repeat H-322, the best powder from the fi rst two test fi rings. The O.A.L. measurements have been tweaked again from fi ve-thousandths off lands to barely touching. If the im- provement between second and third fi rings is as good as the difference be- tween one and two, we will be there! If not, it’s back to the drawing board. All of the test fi rings were con-
ducted with the Weaver Classic 6-24x using Burris Signature Zee rings and an Interlock Tactical base. Let me pass on a little shooting tip that has been ex- tremely helpful for me when it comes to accuracy. If you look on page 317, lower right-hand corner, of Brownell’s Catalog #63, you will fi nd 1" square,
, Shaggie , Ghillie, P.O. Box 691 • Ramona, CA 92065 • 760-789-2094
black target pasters for $7.99 for 1,000 targets. The best and most stable sight picture I have ever been able to fi nd is by placing the 1" black square in the upper left-side of my scope with the horizontal crosshair straight across the bottom of the square and the vertical crosshair straight up and down the right-hand side of the square. This, of course, makes your point of aim the bottom right-hand point of the square. You have a constant reference from each crosshair. If you are shooting a target dot, you obviously place it in the same place. If you have never tried this – do so! Reread this — the concept is so simple and effective (not to men- tion they are the cheapest targets you can buy). Just completed the third test
fi ring this morning and was “blown away” by the fi rst two targets, which measured 0.162" and 0.163" for three shots. The load was 27.4 grains of VV- 133 pushing a 50-grain Nosler B.T. Two additional groups also shot in the ones — 26 grains of H-322 and a 52-grain Shilen, and 25 grains of N-201 with a 50 gr. Speer TNT took smallest group honors with a 0.106" measure- ment. A total of 15 groups were fi red, with the largest being 0.680" and the smallest, the aforementioned 0.106". This is “satisfactory plus” perfor- mance for a “Parts Gun.” It is hard to say how well this rifl e will shoot with a good after-market trigger and a bedding job, but my bet is it will average 0.200" to 0.250" with the fi nal “pet load.” This has really been fun and a
surprising, while at the same time very satisfying, project! The only .22 PPC that I know of being factory chambered today is the Dakota Preda- tor which will set you back about two thousand and one dollar bills. I am taking bets that it won’t outshoot the “Parts Gun,” which to date has a total investment of four hundred and fi ve one dollar bills.
The “Parts Gun” worked! When test fi red, the average of all ten groups was 0.325 inch. The six best groups averaged 0.240 inch.
Page 140 October — December 2011
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