Okay, based on what I've been able to find out, with nitrogen, it should be 494 cu. ft. at 6K psi, of course. So for a rifle with a 300cc or so tube like my S400E, filled to 3K and refill at 2K, that would be about 342 fills. For something like my Cyclone, at about 200 cc's, it's over 500 fills. For comparison, my tank is about the same size, but at the lower pressure/cu. ft., I'd only get about 200 fills for the S400. Even if you were filling an Air Force rifle, that's over 200 fills with your tank. So what are you shooting that you figured only 100-120 fills? Sounds like you've got the PCP guys covered, nice having friends that owe you :-).
Jerry, still not 100% certain, but looking pretty good. The wife is vacillating a little bit, but mostly just because of the timing, early spring can get really busy around here, not that the honey-do list is any smaller this time of year :-). Although if work doesn't pick up, I may still have to sell the S400 to make it. Dates aren't all that important on my end, once you guys firm it up I'll make my reservations. Later.
Dave