Quote Originally Posted by rcathey View Post
As in it could go off by dropping it? What’s the mechanism of ignition?
They go off when they strike the target, that's good enough for me. Take a look at the link I provided for the cut away look inside...

Quote Originally Posted by rcathey View Post
an EMPTY, primed shotgun shell
I on the other hand was using them as targets with my Red Rider BB gun and the primer DID go off...no surprise now to us...from about 6 yards...

On the other hand I can give you testimony of one .44 magnum that exploded when it was dropped to a concrete floor...hit a nubbin of some kind I guess... I can go on...