i think if i had a lot to do i would get a universal DE primmer (i have one) and pop them out
i say universal because it will be a loose fit around the case and if one did go off psi can escape down ,
using a sizer die it is tight already and some dies have a weep hole that can face you so things can escape but i think some dies don't also.
what ever you do were glasses
i bought 500 44mag brass that came primed i set a few off in the gun and most were week. i used my sizer die to pop them out (before i got the universal die) and every now and then i would here one go off, mine were very faint.
i have been told some put oil on top of the primer some soak in water and what ever, still nothing is for sure, killed the primmer, chances are it is dead but anything can happen.
i have had a primmer go in upside down and i have just popped it back out and reused it.
so far so good.
im sure someone will chime in soon yes/no/he's crazy
but nothing is a sure thing except firing them and then that sucks too