When (if?) I ever run into a primer that doesn't fire on the 1st hit (and I'm speaking primarily PUN INTENDED
about 9mm reloads) I'll usually give it a 2nd chance, then if no go set that round aside and later pull the bullet & powder...
I then take the brass and put it in my CZ75 and in every instance except 1 that primer fired: this includes all the different domestic small pistol primers, the Ginex I bought during the time when primers were almost impossible to find, and the Argentinian ones which seemed to be the most problematic (but for practice ammo at the range worked pretty well)...
A dud primer is a very rare occurence with any of my revolvers, which are all stock spring-wise.
Cheers!
P.S. The No. 41s (both the cci & Winchester versions) are my choice for 223/5.56 & the No. 47s for 308/7.62 applications. SMRPs for 300 Blackout.