I wouldn't pay that much attention to Saul saying "I guess your not that good of a shot after all" if your trying to use that line to say Burt couldn't have shot Tommy. Burt may have put a bullet into both of them or shot through Tommy to hit Saul. As for the gun used, I don't remember the exact sequence of events detail for detail right now but I'm pretty sure I remember those shots sounding like they came from Shirley. Correct me if I'm wrong. I also seem to remember Burt saying that the bullet should have gone right through Saul which is why he thought that it went through Tommy first. So yeah, I'd say that bullet would have gone through Tommy to hit Saul. Also handgun bullets can go through one person to hit another. I don't know much about guns, in fact I know nothing other than AK47> Everything, but I saw teh end of Die Hard 4 I saw Bruce Willis fire a bullet through his shoulder to kill the bad guy