Hey guys,\n\nHeading in on thursday to our local metal mart. They have aluminum tubing. I'm thinking of\n\ngetting some 4 & 5ft, .40 cal tubing, and as well would like to experiment with other diameters.\n\nWhat might you suggest? Perhaps a .62 if they have it and ??\n\nI'm not hunting, I just enjoy target, plinking.\n\ncheers.