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justindad
02-13-2023, 12:47 AM
I’m wondering where I can get into trouble with compressed powders. My main question is at the very end here.
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My Lyman 49th Ed shows Enforcer giving the max velocity in .357 SIG, and the max charge is a compressed load of 15.2 grains (starting load is 13.7 grains) under a 125 grain jacket hollow point (Speer Gold Dot). Lyman also shows 13.7 grains as the max charge under a 147 grain TMJ. I have 124 grain truncated cone j-words from RMR and it looks like the powder starts getting compressed around 13.8 or 13.9 grains. I am using CCI magnum primers, and Lyman used Federal standard primers. My Fiocchi brass has the same water capacity as the Federal brass used by Lyman.
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I loaded 15 rounds between 13.7 and 13.9 grains, and they are not crimped. If the OAL does not change in 24 hours I will collect crimp these and shoot them.
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If 13.8 grains is just touching the bullet, is 15.2 grains excessively compressed?

justindad
02-13-2023, 10:38 PM
They all passed the 24 hour creep test. Now let’s see what the chrono says…