I have some land I can safely shot on, i.e. no houses to worry about hitting, no people who may inadvertently be walking behind the target, unless they are trespassing. I shoot a 22LR, Marlin 336C 30-30, and a .44 Caliber Traditions 1851 Colt Navy Revolver(black powder). What should I make my back drop from, how big should it be, and how thick should the material be? Where I used to shot at, I had a nice sand hill as a back drop, now I just have open area. Thanks for any info.
David