Mine is made from an steel electrical breaker box that's 12x12. I also put electrical flat junction box 4inch x 4 inch covers inside, (as a just incase measure) then lined with 1 layer of duct seal. It handles 40+ fpe easily, at 10 meters, stoping in the duct seal with room left over. I use neodymium magnets to hold the targets to the target frame.It will outlast me..
I'm just using a home depot bucket. I bag of rubber mulch filled it. I set it on its side and tap targets to the lid. When the lid get too shot up I have a stack of replacements. Here is the targets I use so I don't shoot out the center too fast.
THANKS!!If I have a 12 x 12 back, how many pounds to make an inch?
Got about 4 inch thick of duct seal in a 8x10 box and found out last week when I shot my 357 titan with a 126 g bullits at around 880 it cant handle it, do have a hole in my shop now, lesson learned. I got duct tape on the hole. David