 SYNC: When the detective turns the corner and shoots the hooded  killer (John) he is carrying a Shotgun, but when he ejects the  bullet casing the sound it makes is from a metal casing. The only  long gun that would make that noise would be a rifle. The noise the  shotgun shell should make is a hollow plastic noise. The ejecting of  the shell and the actual motion of the reloading must have been  separate.