Iput some polyvinyl tubing {anti-bounce}on the valve stem to get about 2" groups {rested}for24 shots on a 3600psi fill with JSB Jumbo, starting at 650fps, going to about 590fps on the last shot leaving around 1200psi in it.
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Factory stock it'd push 32 grain Eun Jin at 700fps on the first shot down to about 500fps on the last shot from a 3600psi fill down to about 800psi after the last shot. You can gimme a call, maybe eventry it out if you'd like . . .