I used to have an old blued P90 and it would shoot anything I stuffed in it. A while back I loaded up some Oregon Trail Laser Cast bullets for the .45 acp and I've shot quite a few of them through my KP97D and Taurus PT1911. Once I got the taper crimp right, both guns fed them like candy. I have a new KP90D that I had only shot about a 150 factory rounds through. I took it to the range Tuesday night and it won't feed the reloads at all. Every one needed a bump on the back of the slide to get it to chamber completely. Dang thing is really accurate though. I just can't figure out why these don't chamber. I ran every one of them through a Dillons case gauge as I loaded them. I still have a box or 2 left. I guess I will use the barrel out of the KP90D as a gauge and try to see what is causing the problem. Could be a rough feed ramp I guess. The gun was squeaky clean before I shot it. Anyone have any ideas?