When Ramada supposedly gets shot when she jumps in front of Topper, the bullet hits a locket. If you look at the bullet, it is the entire cartridge...it should have only been the slug part of it, not the whole case.
It is supposed to be a funny comedy, so the whole shell is suppost to be a funny part, just like when the cornel shoots the iracian soldier with the grenade launcher he blows up all over the wall and still talks.