Dave, I could be wrong, (my wife would say yes) but the Gene Hackman film where he gets a hole shot through his "head" I think, is that nightmare "The quick and the dead." All star cast though, just used in a wierd way.
In Unforgiven, Gene's character is "little bill" and is shot with a Schofield by Clint Eastwood's character William money. Money throws a shotgun at him and then draws and fired on little bill, in a bar gunfight.
You know what would cool (and I know it can't be done) is to stage that William money gunfight and use correct blackpowder rounds. The smoke would be amazing. Especially after William Money shoots that ugly barkeep with a shotgun INSIDE. That one thing and nobody would be able to see anybody do anything.