I have a P99c in 9mm which is absolutely reliable with my practice ammo, 9mm Winchester White Box and Federal EFMJ but very unreliable with my preferred carry ammo, DoubleTap 124gr GoldDots. I use it with the EFMJ for carry now but would prefer to have it working reliably with the 124gr GoldDots since I prefer their ballistics. The ammo is 100% reliable in my other carry guns and I'd rather stick to it if possible instead of stocking another load just for the Walther.
I really like the P99c and would like to get it up reliable enough to be a carry gun so I am willing to put some time and effort into getting it there. To get the most often quoted answer out of the picture I don't believe I'm limp wristing it since I do not have the same issues with my P99c in 40 S&W and I'd expect if I was, the issues would show up there first. Most of the failures I am seeing are the nose of the bullet riding up too high and jamming against the top of the barrel.
I am not the first owner and have had a suggestion that the previous owners might have tinkered with the springs. This seems possible so I'd like to start there. 2 mags came with the gun and I bought 4 more direct from Walther America. All 6 are about equally reliable or unreliable depending on your view point. I have probably not put even a thousand rounds through the gun since I've owned it so at least the mags I purchased should be under 20 cycles of ammo through them. I assume that these mag springs are in pretty good shape.
So my next thought would be the recoil spring. What's the hot setup for the recoil spring with hot ammo such as the DoubleTap? My first preference would be to have it work with anything but if I have to pick having either my carry or practice ammo reliable the choice is pretty obvious. Given my life may be riding on it, I'm relatively price insensitive. Is there anything else I should be looking at? Any other suggestions?
I really like the P99c and would like to get it up reliable enough to be a carry gun so I am willing to put some time and effort into getting it there. To get the most often quoted answer out of the picture I don't believe I'm limp wristing it since I do not have the same issues with my P99c in 40 S&W and I'd expect if I was, the issues would show up there first. Most of the failures I am seeing are the nose of the bullet riding up too high and jamming against the top of the barrel.
I am not the first owner and have had a suggestion that the previous owners might have tinkered with the springs. This seems possible so I'd like to start there. 2 mags came with the gun and I bought 4 more direct from Walther America. All 6 are about equally reliable or unreliable depending on your view point. I have probably not put even a thousand rounds through the gun since I've owned it so at least the mags I purchased should be under 20 cycles of ammo through them. I assume that these mag springs are in pretty good shape.
So my next thought would be the recoil spring. What's the hot setup for the recoil spring with hot ammo such as the DoubleTap? My first preference would be to have it work with anything but if I have to pick having either my carry or practice ammo reliable the choice is pretty obvious. Given my life may be riding on it, I'm relatively price insensitive. Is there anything else I should be looking at? Any other suggestions?