Jorge..I got my bottles and remote with slide from eBay. Bottle cost me $19 shipped and remote $24 shipped. I now have 2 remotes, one with s short nipple/slide/female foster fitting and 1 coiled with gauge. From my observations.. the 20oz bottle when fresh(18-17oz filled) to 7 oz, i can fill my QB between .7oz(19grams) to .8 oz(22grams) which gives me 30 full shots at around 669fps temp of 70. Should shot higher when Florida hits the 90's. When the bottle has less than 6 oz I only get 20 plus shots due to more gas gets in than liquid to the QB and that's when I hooked up my coiled remote and shoot my heart out till my thumb gets sore from cocking the bolt. When I ran the QB with 2 carts I get more shots of 40 plus because liquid from carts is 23 -24 grams vice 19-23 grams from bulk. When I tuned my QB I left the piercing pin for this reason, just drilled 4 holes in front of the valve and tunes from Mike and CDT. Currently my go to AG is still the Crosman G1 Extreme which shoots CPHP 10.5 extremely well. The 2240.5 is not far behind, just need to get used to the muzzle flip and should get ragged hole too. More practice on the Beeman RS2 because of cocking and recoil, I got spoiled on my co2 shooters.