I recently bought some .308 "snap caps" expecting to get some good practice in with them working on getting rid of flinching. Having them randomly mixed in the magazine with live rounds at the range sounded like a good plan right? BUT, the problem is when cycling the bolt it is easy to tell the difference between live rounds and the dummy rounds. I was thinking about making my own so the feel is the same, using the same components minus the primer and powder. Does anybody see any problems with this approach?