The local range used plywood backers that varied from new to ugly large holes.
Everyone that wanted to measure their shots would staple cardboard under their targets.
The cardboard supports the paper for clean round holes with no tearing.
Easy to throw in the trunk till it's used up.
Yep, I use a 4'x4' sheet of OSB covered with a sheet of corrugated cardboard. I can hang six standard rifle targets on it. The OSB will last thousands and thousands of rounds. The corrugated facing is easily replaced, but will usually last about six months in our weather.
