I wanted to unload my TC Hawken earlier this year and I got out the CO2 kit I'd had sitting around for about 10 years. I remember looking at it and thinking "There is no way this little bit of gas is going to get the bullet out of the gun". I had a TC Maxiball (.54 caliber) in it. I (luckily) stepped outside and put the nozzle on the nipple and WHOOSH, the gun was unloaded with enough force that I'm convinced we could hunt with compressed air if they ever make black powder unavailable. I recalled seeing something on the History Channel once about compressed air hunting rifles (they used a hollow stock for storing the air). My bullet left the gun and stuck in the small dirt hill I had the muzzle pointed at.