[Ron Wood]

Good point on the ammo Tom. On custom guns like this, especially one that has been cut down, the action is tuned to work by the builder. It probably should be standard practice to use only the ammo it was "proofed" with at the time it was assembled. Using anything else is a gamble that it will match the force of the proof ammo. On a shortened grip, the spring and spring guide have 15% to 20% less room to work in and absorb the recoil. Hugh can correct me if I am wrong, but it seems like a safe thing to do.