Wanted: PROOF and other weapons-testing rounds


Looking for proof rounds, singly or in boxes, along with other weapons-testing items such as standard, barrel proof, pressure test, action test and so forth. Also helmet or armor testing rounds. Particularly non-US.

Rifle, pistol, shotshell, rimfire, large-bore - you name it, I’m just getting started so I’m looking for just about anything. Have many US calibers to trade, or will purchase outright.