Roadhawg
Bee Farmer
I have cut a few down and converted them, but too skeered to load and shoot em.. LMAO
For subs, I would not be concerned.. supers worry me a bit, but... I have no scientific basis for that fear.
Did you see the link to the AR forums were someone was using them for 223/556 rounds?
http://www.ar15.com/forums/t_6_42/362105_Can_5_56_M200_blanks_be_reloaded_as_live_ammo__Completed_6th_firing__With_video_.html