what is your gongs made from???. built one from 1/2 plate steel i borrowed from work, set up at 450yds,
190smk@2850 fps, 300wm left a 1/4" deep hole in gong, seen this before, on railroad tie plates, wandering thickness, kind of steel. is this normal or just need to increase distance, i intended this target for a 1000yd target, to nasty of a day that day to shoot that far, just wanted to see how they sounded