Did you have trouble with you p99c in 9mm? I find that somewhat surprising. I have one and it has be flawless right out of the box since day one....
Wish I could say the same. My 9mm runs great with FMJ practice ammo, completely reliable. I tried it with 400 rounds of DoubleTap 124 grain and it would jam at least once within 2 mags and often more. I had about 1500 rounds of the DoubleTap 124 grain sitting around since it works great with my other 9 mm's. I didn't want to stock up another load just for one gun so I wound up using EFMJ which worked but wasn't really a great solution because of the cost and my preference for JHP. Otherwise it was a very impressive gun. I loved the form factor and the accuracy. This was one of the reasons for getting the 40 S&W, the 9mm was very, very close to what I wanted but not quite there. I liked it enough to give it another chance though. Any suggestions on improving the feeding of the 9mm would be most welcome.
I'm surprised you had 2 bad primers in 300 rounds of factory ammo. This has only happened to me with .22s, not once in thousands of .40.
I've been having a bad run lately. Seems like I've been seeing bad primers in the Winchester White Box 38 caliber. Still trying to definitely pin it to either the ammo or the guns but I've been seeing a lot of bad primers in the three 38's I have been shooting with lately. Never had the problem in 40 S&W with my Glocks though. I'd usually go through around 400-500 rounds per range trip and it would be a number of range trips before I would see a faulty primer. I'm going to be taking it back to the range to try it out with 165 grain JHP this weekend though so it'll be interesting to see if this is a trend or an isolated blip.