At my local range, I saw a homemade brass catcher that I really liked. The base was a C clamp, that could be secured to the edge of the bench. The pole was made from electrical conduit. The conduit passed through a coupler of some type because he could adjust the height and lock it with a set screw. The hoop was made from some heavy gauge wire, shaped like a rectangle, maybe 24X18 inches. Some 1/4 in. netting sewn around the hoop, with enough material to form a pouch. I thought it was the coolest thing. I can see making one for those desert/BLM shoots. Maybe use an umbrella base to keep the thing from flying away. Personally, I don't like having a net attached to my rifle.