The Google search should be for "shooting range equipment".
The designs that I have seen are either a tilted plate, leading edge
toward the shooter OR a snail-shell design where the bullet spirals
down, expending energy, into a catch box. Sand-trap at the bottom to
avoid splattering.

On Fri, 01 Apr 2005 15:04:12 GMT, "Tom Gardner"
wrote:

I came to the realization that I can shoot in the plant after hours without
disturbing the neighbors. You can't hear even a .45 from the office yet
alone outside. So, I figured I'd weld-up a trap. I'm sure I could bodge
something together from the stock racks but would appreciate a plan or some
idea. I'd let Roger (engineer) do it but the last one he built he said he
had to move with a crane. I'm thinking 12" to 18" square. ( I only need a
soup-can size!G) How thick to stop a max of .44 at 50'? .223? I'll
probably shoot .22s most due to cost. I did Google without joy.

Another ammo question. I have 200 rounds of Wolf brand .223 that are
severely corroded after being in a sealed ammo box for 8 months...weird!
How should I dispose? (DON'T BUY WOLF!!!)