General Geoff
Member
A guy I know who's not too knowledgeable about firearms but knows enough to be dangerous (so to speak ) thinks that a .577 Nitro Express and a 4-Bore round could penetrate a level IV trauma plate. I don't think they would, as they have a relatively low muzzle velocity (albeit very high mass). What do you guys think? Not that it'll likely ever happen, but it's an intriguing question nonetheless.