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Old 10-20-2019, 01:47 AM
squirrel_slayer squirrel_slayer is offline
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Join Date: Jan 2013
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cool project. 1 factor you may want to consider to help keep things in check is bolt thrust.

If i'm doing this right with a .226" base diameter case (22lr) at 25k psi you have 1002 ft/lbs of bolt thrust.

With a .278" base diameter of the 25 acp at the same 25k psi you have a 50% increase of bolt thrust at 1516 ft/lbs.

To keep it at the same bolt thrust levels as 22lr. Pmax would be 16,500psi with the 25acp case @1001 ft/lbs of bolt thrust.
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