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.
|