Will amaze oh by running this by him, he has the air rifle, I'm only allowed to play with it. I know it is pneumatic, will ask him about tuning it, pretend I need to hit bigger crowsWell I was playing with a gunpower stealth the other day that is a pre charged pneumatic air rifle that can be tuned up to a muzzle energy of a little over 60 f/lbs. at that output you only get about 7 or 8 shots per tank.
12 f/lbs is the legal limit for a non FAC air rifle so that puts it in perspective...probably cheaper and easier to buy a shotgun though.