I just spent last night drawing down almost 300 rounds of South African R1M1 7.62 NATO ball for the components. Surprisingly, the spread of powder weights and bullet weights was rather higher than expected. Anyway, the averages came out at: 42.25 grains powder (cut tubular) 143.25 grains bullet Given that this is NATO ball, I would wager that muzzle velocity is around 2800 fps. Since I intend to use the powder, I would like the other experts on here to doublecheck my assessment of it. I am reckoning that, based on intelligent guesses and the Vit tables, that the powder is a whisker faster than N140, but not as fast as N135. So, if I were to take the start loads from N135, or a little down from the start loads for N140 and worked up from there, I would be safe. Side note: Given that PMP military ammunition is usually good, I'm wondering if this 1981 batch failed inspection and was surplussed off due to the spread of several grains in both powder and bullet weight. Second side note: drawing down this military ammo for powder and bullets is actually economically worthwhile even if I wasn't getting rid of the SLR: for a kilo of powder and 367 bullets you are looking at about â¬92. Accounting Eur0.10 for the Bullets, which is fair, you are looking at â¬55 per kilo of powder, which is about â¬10 cheaper than Vit.