I'm seeing some flattening on that primer, despite the image quality. but no swiping or imprinting. Last range day, I had some "spicy meatball" 230 fmj's coming out of the Bartz 20" and they had about the same degree of flattening, also with no swiping or imprinting. I know in hindsight they were way in excess of what I would normally shoot. 450b Factory loads are supposed to be "litigation lawyer approved".