Ran 200 rounds through the FPC22 yesterday.
CCI Mini Mags, 60 rounds, no issues
Federal 36 gr CPHP, 40 rounds, 3 failure to fires in each 20 round mag
Aguila Super Extra 40 gr LRN, 20 rounds, 1 failure to fire, 1 failure to feed
Norma-Tac-22 40 gr lrn, 20 rounds, no issues
RWS Rifle Match 40 gr lrn, 20 rounds, no issues
CCI Standard Velocity, 40 gr lrn, 20 rounds, no issues
Federal Automatch, 40 gr lrn, 20 rounds, no issues
The Aguila I ran was old and when loading I noticed that the lube was dried up on the rounds.
I usually only use the Fed 36 grain CPHP in the blot .22lr I have because they just don't run well in any of my other guns.
Here is the firing pin for the FPC22:
Sorry for the blurry pics it was hard to get focus on the end of the firing pin.
I had no problems with ammo I trust, CCI MIni-Mags and CCI SV. I will keep an eye on this because the depth of the firing pin strike is inconsistent.
Here is how to remove the firing pin from the bolt:
Push in on the firing pin from the hammer side of the bolt to relieve the tension on the retaining pin. You have to push the firing pin in flush with the bolt to drop the pin back in.