Thirty or so years ago I bought 3000 rounds of surplus Czech 7.62 ammo. For use in a C96 I broke the ammo down and reloaded it with Unique. I weighed 50 original charges and found they ranged between 9.8 and 10.2 gr. Headstamp dates were 10/51 to 1/53.
Since I'm thrifty I put the surplus powder in a mixing bowel and “blended” it with a wooden spoon and my hands. Then I started loading it in the 9 mm Par. I used 115 gr Win jacketed bullets, Federal cases, and CCI primers. Overall length was 29 mm. I shot the reloads in a H&K P7.
Here are four selected results with the format - charge in gr/velocity fps/standard deviation fps:
7.0/1065/26
7.5/1109/21
8.0/1198/25
8.5/1261/27
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