So interesting discussion with my pops this Christmas about a rifle I had never heard of...the Giardoni air rifle. Famous for being carried by Lewis and Clark, and used by the Austrians against Napolean. Basically a .46 caliber rifle that was either 22 or 20 rounds that used a small tank that was pumped 1500 times to achieve a pressure of approximately 800 psi! Would fire about 40 rounds and used a bicycle type pump to refill the tank. So his question was why do we not utilize this technology today? I mean if the Government wants to stop guns by making brass, powder, etc hard to get why not use this as a viable means of protection? Any thoughts or experience with this?