So just to wrap up this thread, I hand pumped the new bottle up to 2.5K and did a few preliminary tests. JSB king 25.39 are moving about 935fps and and stacking on top of each other at 25yds. Also shot some NSA 26.8gr slugs running about 905fps... I'm finally a member of the 900+fps airgun club. Thanks to you guys that responded to this thread for helping me work through this process.
I had some Krylon camo spray paint laying around and decided to test it on the forearm. I think I'm gonna do the whole stock in that color. This is the bench for my basement indoor 10yd range which doubles as my sniper hide and outdoor 25yd range.