My friends during college included a bunch of gun nutsįirearms 5e Dmg FreeI've shot a. 1) work on your mathĢ) I've done some destructive testing. 357, but a +p 9mm round should suffice as a decent stand in even if it is a bit slower if I can't borrow a. If you'd really like, I can head out to the woods and put some holes in things for demo purposes. A cheap hollow steel door has walls about 1mm thick and I'm willing to assume this guy knows what he's shooting at: Neither round is especially potent, but I would guess that they might be stopped by 18 gauge sheet steel. 38 Special with no modification and people often use these lighter loads for target practice. 357 will care precisely not at all about 18 gauge sheet metal. 18 gauge steel is a 1 mm thick and while not all steel is created equal and neither are all bullets but unless you are using something like AR500 or you have light loads a. However, I know quite a bit about modern firearms and you are seriously underestimating their ability to penetrate. Impact area varies wildly, but on average a musket ball is bigger than a modern bullet with significant overlap. I know comparatively little about muskets but your statements about lower velocity are, generally, correct.