[Ac1d0v3r1d3]

Thanks for the fast replies.

I've tried lots of different ammo and I've only had the stove pipe problem with WWB so I just stay away from it, I've also had the problem with my CZ75B so I just don't buy it anymore.

The problem with the slide closing is a new behavior. IF I recall correctly it'll happen with any ammo. Whether it's Speer or Remington or Winchester JHP's or S&B or Wolf or UMC range ammo. So I don't think that ammo is a problem here. I also don't think that it's magazines since it doesn't happen any more often with the first round than the last.

I will clean the gun really really well and try to put a few rounds through it tomorrow. I have two mags, so I can test them both out and see if one malfunctions more often than the other. I also have a bunch of different ammo that I can try and see if maybe I'm wrong and it is the ammo.

Do you think that polishing the feed ramp might help?