First, there is no such thing as a dumb question when it comes to reloading.
Little things matter and big things can go wrong fast as a result.
Originally Posted by fmj
Or will my decapping die set off the primer or make it inert?
Originally Posted by Txhillbilly
While I won't advise decapping a live primer,I also have done it many,many times over the years.
I have never had a primer go off from pushing it back out of the case with a decapping pin.
I will agree with Tex I will not advise anyone to decap a live primer.
If the case will chamber you can always fire the case in your gun and then
decap it. Remember to handle the gun as if it is loaded with regular ammo
primers can, if rarely, kill. If the case will will not chamber the case is ruined
anyway, I would just dispose of it.
Now I have a universal decapping die, I use that for decapping live primers.
I do not reuse decapped live primers because I have found 10-20% of them
will fail when reused. I just have a little fun with a my hammer and anvil
outside my shop with live deprimed primers. This is not advisable, but then
neither is decapping live primers.