Home Forums Hunting & Shooting Handguns Mangled brass

I went to the range today and took my Remington R1. Other than VZ grips it is stock. I had 3 or 4 cases with a mangled mouth. The load was 200gr LRNFP bullets and 6.0gr of Universal. Only one case was jammed in the ejection port and not a stove pipe jam. The case was caught between the slide and rear of the barrel and inline with the barrel but half way out of the pistol. The jam was the last round out of the magazine. I know two of the ejected cases that were mangled were from a Wilson 8 round magazine. The fact that two cases that were ejected looked like the jammed case is stumping me as to the cause. I haven't had this problem before but I'm not sure if the problem is the magazine or the load.

All of the cases looked like this.