I plan to build a shot trap soon but had a few questions.
1. Will the shot split if the metal backing is too thick/stiff? I got a free piece of 12 gauge steel for backing but I know most plans call for 20 gauge or thinner. With TSS being so hard I thought it might be brittle as well and need some "give" from thinner sheet metal.
2. If using the thicker plate, should I add a 5th layer of rubber backed carpet?
3. Should the carpet side be facing out or the rubber side?
Thanks in advance.