breakingcontact
Moderator
I mix them in with my range mags to do malfunction clearing.
Dummies can work here too, but my experience has been that over time, the bullets set back and can become an issue and even a danger, depending on the gun.
The A Zooms Ive used, have held up better than any of the dummies Ive used. The anodizing may wear, and they may get ugly, but they still work for a good long time, and usually a lot longer than the dummies ever did.The "problem" with snap caps is that they are NOT dummy ammunition, and are being used that way. So, of course, they don't hold up well.
Loaded ammo isnt usually chambered over and over and doesnt usually have the issue. Not that I havent seen factory ammo setback on the first chambering either.Also properly made dummy ammo will not suffer bullet "setback". (properly made ammo won't, either, but that's another discussion)
I've handloaded my own 9mm dummy rounds but they've never held up. In my experience the bullet falls out of the case with extensive use.