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Posted: 3/30/2003 11:44:48 AM EDT
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While the final results have not been formaly figured for the ammo tests that RS39 and I conducted last weekend; here is some info on the ammo that shot the best over all groups. The Silver Bear Match was what everythigng else was being tested against. The following info are the results of pulling a random group of 5 bullets of each type and testing the bullet diameter, powder charge, and bullet weight. In no particular order................ 7.62 x 39 Silver Bear Match (Made by Barnaul) Bullet 1) 126.6gr - powder 24.4gr - .310 diameter. Bullet 2) 126.3gr - powder 24.7gr - .3095 diameter. Bullet 3) 126.0gr - powder 25.0gr - .310 diameter. Bullet 4) 125.5gr - powder 24.8gr - .311 diameter. Bullet 5) 125.6gr - powder 25.0gr. - .312 diamter. Average bullet weight = exactly 126gr. Maximum difference of 1.1 grain. Average powder charge = 24.78gr. Maximum difference of .6 grains Yugo. Bullet 1) Diameter - .3065 Powder - .25.1gr Bullet - .122.5gr 2) Diameter - .3065 Powder - 25.4gr Bullet - 123.8gr 3) Diameter - .306 Powder - 25.4gr Bullet - 122.6gr 4) Diameter - .306 Powder - 25.8gr Bullet - 122.8gr 5) Diameter - .3065 Powder - 25.4gr Bullet - 123.5gr Notice bullet diameter. Very consistant, but undersized. Bullet is an open base lead core. Max. difference in bullet weight - 1.3 grains. Average weight = 123.04gr. Max difference in powder charge - .7 grains Average charge = 25.4gr. Baranul FMJ Bullet 1) Diameter - .310 Powder - 24.4gr Bullet - 125.9gr 2) Diameter - .309 Powder - 24.4gr Bullet - 125.6gr 3) Diameter - .310 Powder - 24.4gr Bullet -125.5gr 4) Diameter - .310 Powder - 24.2gr Bullet - 125.5gr 5) Diameter - .3095 Powder - 24.3gr Bullet - 125.6gr Note consistant bullet diameter, powder charge, and bullet weight. It is obvious why this ammo was so consistant in all rifles. Max difference in bullet weight .3 grains. Average bullet weight = 125.62 grains. Max difference in powder charge .3 grains. Average powder charge = 24.34 grains Bullet was has a deep hollow base lead core. It has the same base as the Silver Bear Match leading me to believe the match was designed from this bullet type. Barnaul Soft Point. Bullet 1) Diameter - .310 Powder - 26.8gr Bullet - 125gr 2) Diameter - .3095 Powder - 26.5gr Bullet - 125.5gr 3) Diameter - .3095 Powder - 26.6gr Bullet - 124.1gr 4) Diameter - .3095 Powder - .26.7gr Bullet - 125gr 5) Diamter - .310 Powder - 26.6gr Bullet - 125.1gr Note the heavier powder charge than the other rounds. Also note consitant bullet diameter and powder charge. Bullet weight was consistant with the exception of one. Max difference in bullet weight 1.4gr. Average bullet weight = 124.94gr Max difference in powder charge = .3gr. Average powder charge = 26.64 Of note was that this bullet is fully enclosed in copper at the base. All ammo types used what appeared to be the same type of finely extruded powder.Due to the interesting results, we will later do a test on the types of ammo that did not shhot as well. |
| Interesting test. Can't wait to see the accuracy results. Have you done a comparison of 5.45x39 ammo? I have som Barnaul SP and Wolf HP, but keep puting off my tests for other tasks that keep coming up. Initial shooting of the Barnaul indicated it may be rather inaccurate. A good test IS forthcoming (soon). |
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We would like to do more testing on the 7.62 X 39 first. We will re-shoot the ammo types that shot the best and worst, and pull bullets for testing for the poorer performers for comparison. In the mean time we have acumulated almost all types of 5.45 on the market. As soon as we can, we will do a test for accuracy, penetration, and tumbling ability. I would love to jump into the next text, but there are reasons to want to do more testing on the 7.62 at this time. |
| We even have some RWS/Dynamit Nobel for the 5.45 test to come, with a SAR2 and Bulgy build. But we have tracks to re-trace on the 7.62 test. We were able to compare with similar irons at 50 yds (accuracy test, not vision test) for 2 Romy and 2 Chinese bbls, but the Bulgy gun was sidelined due to a disconnector that broke from improper heat treatment (one of about 50 the mfg was unable to catch when they found the snafu). For the finals we want to pick setups with representative bores, similar trigger settings, and similar scopes. And we probably need to connect with Campy to pin gauge the bore diameters as part of the report. |
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Cool that's really interesting. Sierra it ain't ! I'd like to see some ballistic gelatin testing of some of this stuff, I bet the 7.62x39 hollowpoints act like FMJ. I've never tried the softpoint. I have some Wolf 55gr HP that I use in My SAR 3, I wonder how it does in gelatin. |
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One thing that we did find humorous was when I opened my boxes of Barnaul 7.62 X 39 SP. All 13 boxes I had were marked as the 7.62 SP, but all had .223 FMJ inside. Just a small quality control problem. Ooops! I thought it was funny. I'll shoot it at some point, no big deal. Good thing RS39 brought some of his. |
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