I've been giving some thought to making a large size bullet trap for catching the lead bullets or jacketed pistol bullets. I shoot a lot of 45 70 bullets weighing up to 500+ grains and 45 & 38 pistol bullets that I cast. I recover some but it's a pain to collect from my berm and remelt them. I have an old 12 ft. long, round gasoline tank that has been cut in half. The curved steel should deflect most bullets down into the ground or what ever I come up with to stop their momentum. Anyone had any experience with this concept?