I didn't want to highjack HC's thread on the 9x39, but Muttman brought up a question that I have been wondering about also. How do you come up with a starting load when changing bullets and powders? There isn't jack on the 9x39 and there is some on the 7.62x39. The info that 1biggun posted in the other thread has a lot of info but only uses 2 powders in the 7.62. I have 3031 and 4064 on hand for the 308 and 30-06, so I would prefer to use that powder. The Lyman manual shows most of the loads for the 123gr using the faster burning powders, but there is one load using H-335 (30.5 starting and 34.5 max which is a compressed load). Looking at the burn rate chart H335 is almost the same as 3031, so would it be safe to start with 30.5 grains of 3031 for the standard 123gr?
Edit to add never mind on the 3031. A 7.62 case can only hold 22gr of 3031 without being a compressed load. 30gr wouldn't even fit in the case.
I'm also going to try some subsonic loads just for s&g. There is some info out there on those loads.
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