well get a wooden rod 18.5 ''long and drop in the barrel with bolt closed mark and cut off ;this a legal short one ;;hell i got like this one in 20 from class 3 dealer -he cut it down -well 3'' mag 24 pellet #3 buck -8 to 10 pellets hit a 8 by 11 paper at 45 yards so it works well a 12 has more pellets more hits !!yes short shotguns are the tool for home defence and hunting too !!