I use firm paper targets from Orville that are 8x16" with 40 bullseyes on them (Jim Casey 5x 8 bulls -100 yards practice targets. I staple them with 8 staples to the target backing stands at our range so they are as close to the backing as feasible. However, I am getting blown-out bullet holes on the target. Any thoughts about easily available backing paper that can prevents these blow-outs other than cardboard (which is too thick for stapling) or post board which is rather expensive for this use. Maybe something I can order from Amazon or a shooting supplies company online. All thoughts are welcome.