When I got my first P99 it shot fine. Then I cleaned and lubed it. Trying to get rid of some of the “grit” in the trigger I over lubed the striker spring. On my next outing with the gun I had several light strikes. Thinking it might have been the ammo I continued to shoot. Admiring the second strike capabilities of the P99, I would look at every other failure to fire. The striker was hitting the primer, but not as hard…
After my shooting session and during my cleaning, I decided I might have over lubed it. This time I gave it what you might refer to as a “normal” lube job. Rather sparing by comparison. The trigger was even smoother and I have had no FTF’s since then. Just had to much gunk in the striker spring area!
Yours may not have anything to do with my experience, just figured it might be a good time to share.
Sounds more mechanical, like what Navy87Guy was saying, plus I have to ask about the ammo???