RE: 5.56/223 for elk/moose(don't flame me yet!)
I am sure it could go through two doors or the rear fenders through the trunk, but through both front fenders, the inner firewalls and through an engine ? I doubt it. A bare engine block sitting on the ground ? probably, but it would have to be bare, because if it hit any internal engine parts I.E. rods, crank, camshaft etc. It would stop it. The engine block itself is cast ,it is pretty brittle, you can break an engine block with a hammer. The internals are much much stronger.