Thank you for answering a question that had bugged me for awhile (throws primer pocket cleaning tool into tool box).Always felt like I was wasting time cleaning them anyways.
Dan
My Bighorn was doing this and I found it to be the case mouth hitting the side of the receiver. I placed a small piece of Velcro felt on the receiver behind the ejection port and the problem went away.
1. Bartlein 24 inch 5R 1/11.25 heavy Varmit contour .308 win (Bisley chamber) muzzle is 5/8x24 with thread protector. Shouldered prefit for TL3 (425rnd down the pipe) chambered by Keystone Accuracy...