Lizard_of_oz from
www.cyborg-owners.com is the one that wrote this
SHOTS PER TANK SIZE: The average marker with a 3000psi HPA system gets about 1 shot (cycle) for every 10psi. A 4500psi tank gets about 1 cycle for every 7.5psi. This may vary marker to marker. Low(er) pressure markers like Impulses, Autocockers, Matrices, and Angels will have higher gas efficiency. High(er) pressure markers such as Spyders and Spyder-like blow-backs will have lowered gas efficiency.
Nitro/compressed air Systems:
3000psi tanks deliver about 10 shots per cubic inch
68ci = 680 shots
47ci = 470 shots
88ci = 880 shots
114ci = 1140 shots
4500psi tanks can deliver 15 shots per inch
68ci = 1020 shots
88ci = 1320 shots
114ci = 1720 shots
Co2 Systems:
9 oz - 350 shots
12oz - 500 shots
16 oz - 700 shots
20 oz - 900 shots
REFILLING FROM SCUBA TANK: When filling from your SCUBA tank to your Paintball tank, you are effectively creating one big tank (as the pressure between both will equalize).
So if you have a small 1.1lt (68ci) Paintball tank on your marker with 400psi (lets say that is the minimum you want it to drop to before refilling), being filled from a 10.5lt (88cft SCUBA tank) with 3200psi (220bar) of pressure.
At first refill
1.1lt * 400 = 440 ppv (pressure per volume)
10.5lt * 3200 = 33600 ppv
combined ppv / combined volume = shared pressure
34040 / 11.6 = both cylinders would end up with 2934psi in them.
At second refill
1.1lt * 400 = 440 ppv (pressure per volume)
10.5lt * 2934 = 30807 ppv
combined ppv / combined volume = shared pressure
31247 / 11.6 = both cylinders would end up with 2693psi in them.
And so on till the SCUBA tank runs out, this can happen quickly with 5 team-mates and one tank
GOLDEN RULE: Never let a tank go below 300psi, ever OR you can have normal (UNCLEAN/CONTAMINATED) air get in and it can cause premature failure of the tank.
Got a question about Scuba tanks? READ THIS!
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