I don't shoot it on high power much , I get 850FPS on #1 on the power wheel with superdomes. I've not counted shots but much , with a 2500 psi fill , I've shot at least 50-60 shots and when I put the tank back on the scuba to top-off it still had 2200psi. I thought it was going to use more . I guess if I turned it up on 9 or 10, I'd be getting over 1000 fps and the shot count would go down . I read at least 40 full power shots are the norm. I also read that the SS with the 12" barrel won't utilize the volume of air past 9 on the power wheel. On the lowest setting with the SS I was denting the heck out of my Beeman pellet trap out in my garage. It looked like it had been shot with a golf ball. I took the 3# hammer to it. hehe. I have noticed that when you adjust the power wheel it'll take a few shoots for the gun to settle-in . J said he has plenty of air , we'll put some pellets through them this weekend. Ask J if all I need is my fill vale and gauge that fits my scuba tank? I'll bring both HPA tanks , we'll turn the 18" Talon up and shoot it on HPA , suppose to get about 1100 fps. kirby