I always wanted a large bore double rifle. But like most people I coundn't afford one. So the next best thing was to build something. Using a 1 1/2 in piece of cold rolled steel, my father bored it 1 in. After honing,the bore was approx 1.014. Using 550 grains of 2fg and a 1500 gr round ball I proofed it. The barrel was hose clamped to a piece of 2x4 and a fuse was used to lite it. It buried itself in 2ft of frozen sand, wow what a racket!. I load it with 200gr of 1fg and 3oz of shot for a field load. If I could figure out how to download pix from my yahoo photo album I could show you what this thing looks like. I'm not the best at woodworking but the 4 bore is functional. I live in Ct and the the law allows shot size up to #2, with no gauge restriction on small game.