22 rimfire bullet trap

[Cuzz]

I have a small store bought bullet trap but it’s only about 11” x 10”. I’d like to build one about 2’ x 2’ . The back plate will be at a 45 degree angle. Does it need to be AR plate?
This is for 22 rimfire only!!

 

[Norcal911]

I've used 1/4" mild steel at 45 degrees and its fine. I've also used some boxes filled with rubber mulch, that works pretty well for total containment. If you use AR400/500 for rimfire it will last forever but its not needed

 

[Tomiboy]

The box with rubber mulch is cheap, effective, and QUIET!