I once made some swinging targets out of some THICK steel to use for rifle shooting. My friend and I set them up at 100 yards. He took the first shots with a 30.30 and those targets were swinging like crazy. I shot next with my German Kar98 with some homeloads and nothin happened. Another shot and...nothing. I could not believe I was missing the target. After 5 rounds I went to inspect the target. There were 5 little holes that were punched so neat and clean they looked like they had been cut with a laser. The bullets had punched through so fast that the target didnt even move!