[jeremy1375]

My brother and I were out shooting his Kimber 1911 .45 in the backyard yesterday. I had a an old snowmobile piston from a top end rebuild and wanted to see how that would hold up to some rounds. I was amazed to see how well the top held up. The round knocked it back about 15 feet, but it didn't break. The copper mark is the .45 round and the others are .22lr