[JJ_BPK]

Originally Posted by Go Devil

I've made multiple backyard traps for friends out of 2"X6" board frames filled with sand.
5.5" of sand stops 7.62 NATO all day long.

I posted some photos of the first test on here a few years ago.
http://www.professionalsoldiers.com/...&postcount=383

I've also made 2'X2' panels for garage use.

I've been looking at the rubber mats used for kids outdoors play-ground set and for weight lifting mats. Was thinking a combo of sheet rubber and the ground-up mulch rubber might be the trick,, but sand also look to be GTG..

Thanks