why not do it with a peashooter, slingshot, airsoft? Saves you tons of money and travel time. If it's not training for combat or hunting that feeds you (nobody''s had to do that in the US for decades) then it's just target shooting. with ONE month of live fire training, an airsoft champion from Japan beat everyone at the Steel Challenge, back in the 80's. So what good was their lifetime of live-fire "training" do them, eh? It's just entertainment, and you can be entertained hunting flies with a rubber band. or bouncing a ball off of a wall.