1. In general, how is a barrel proofed?

2. Why do some doubleguns seem to have lots of proof marks?

3. Do I need to get my guns reproofed? In particular, My Iver Johnson Supertrap, from which I have shot 25 rounds from both barrels, my Iver Johnson Special Trap, from which I have shot several rounds, my WWII Stevens 620, which was recently overhauled and test fired by the gunsmith.

4. How do you know that the proof test round is not the straw that broke the camel's back and that the next round will be okay?

Thank you
Lou

Last edited by Bushmaster; 04/16/10 08:16 AM.