by ssscottg on Wed Sep 22, 2010 10:55 pm
Hi Walt,
Try a search on this site. I think I saw a summary of number of fills for each size tank. I think that my 80 cube-foot tank will give about 50 fills. I called around to dive shops looking for a used unit and got mine (12 years old) for $70 including the hydro inspection and the visual. At that price you could buy 2 for the price of 1 new one, for 2x the fills per trip to town. Another thing that I do to conserve air, when I target shoot from my bench at my home, I just leave the tank connected to the gun, doing so prevents air waste pressurizing / depressurizing the hose. So I can shoot 300 - 500 shots directly from my tank and use very little air (like only 100-200 psi). Another Idea is to buy a 4500 PSI tank. It will give you more that twice the number of fills, but they are real expensive compared to SCUBA.
Regards,
Scott