Yes I'm trying to figure out what the gun was originally proofed for and it's original chamber length. It's my Army Navy so it is reasonable to assume it was properly proofed at one time, but there are no marks as to the tonnes or chamber length. The gun currently has a 2 3/4 chamber and appears to be in better shape then I first thought. It is off face by about 15 to 16 thousands and has been boughered by someone ham handed, but no real harm has been done. In fact it might still be in proof. I had originally planned to keep pressures below 6000 psi, but now 7500 psi seems reasonable. My next step may be to use barrel weight try to estimate what it was proofed at, but the tonnes marks are too obvious to miss. I'll get some pictures I must be missing something.
