I have a pretty limited area, I made a rack that is similar to one for pool cues or fishing rods, It is just two boards, one about a foot above the other, the top board has a 1 3/8 hole cut with a hole saw, the bottom one has a 1" counter sink hole about 1/2" deep with a little felt pad on the bottom. I stand the barrels on the muzzle end. I can set 6 easily in the space between two studs in the wall.