@Crosshair: WoW! You know the Pope?
If that happened with 1 round it could likely happen to all of them. Why are you trying to take them apart in the first place? They sound like old factory rounds with tracers. Just go shoot them. Probably far less dangerous.
Are you trying to disable them so you can safely throw them away?
Are you trying to reuse the tracer bullet?
or do you just want the brass?
Mike