Re: Disposal of "misfired" rounds
just put your eyepro on and use the kinetic puller to retrieve the bullet and throw it in the decapper of choice and knock the primer out. If you're really worried about it going off, wear gloves and do it away from anything flammable; worst case it does go off, it ain't gonna hurt you. But I've never had one go off and I've banged on live ones (both hit and untouched) and nary a one has ever gone off. (watch, next one I do will explode on me... JINX!)
I would toss the powder, don't even try to guess what it is.
If the primer pocket is crimped, it will take some extra oomph to get the primer out but like said, just take it easy and tap it out.
"Loud noises don't end gunfights.... well placed shots do."