Well, you may fare a bit better than I have at 1000PSI. Granted, I did not have Roy build my valve, but I ran a Ninja bottle shimmed up to 1000PSI, and shot 14.3 CPHP's at a consistent 650-670 FPS range. from some testing, and such on the AS platform, 1400 PSI seems to be a nice sweet spot for the closed valve system without moving to a very heavy hammer spring(Disco). I had to move to the Disco spring when I went to a 1600 PSI bottle, then added a AOA two stage sear to get the trigger back down, and better than it was. I think, and from input from others, that the closed valve works best between 800 - 1400 PSI. An already hopped up valve should shoot 700's with a 1K tank. Don't see why not. Just go for it, and run it over the chrony. I still also have a stock valve spring, which may slow mine down some, but, I still get 80 good solid 757 FPS shots out of it, with a SD of 2.
This message has been edited by rualert from IP address 126.96.36.199 on Dec 17, 2010 3:36 PM