ok,proove this.

[Flow_Tech]

there is really no advantage to using an LP tank on an LP gun over an HP tank,correct?

[SpecialBlend2786]

less work for your inline reg

[Flow_Tech]

im not talking abotu that,i mean ingeneral,you have just as much as a chance to mess something up witha n LP tank as an HP tank,correct?

[shatter_storm]

Some inlines are designed for a certain range input and can have nasty things happen if you overpressure them. Otherwise, no, an inline reg will take whatever you give it for input and reg it down to the expected LP level. It's best to use the officially recommended tank for the certain marker, just so if something does blow out they can't tell you it's your fault for using the wrong tank.

[FallNAngel]

I can't think of any gun that really says you must use a specific output (LP or HP) tank. Some manuals say it's recommended and some people will tell you "it's an LP gun, use an LP tank" ... I say just use HP.

[athomas]

For the most part that is correct. A regulator that is designed to be more responsive at lower input pressures may exhibit less response at higher input pressures and vise versa. There is usually a recommended operating range for a given regulator. More expensive designs may have a larger operating range. That is due to the closer manufacturing tolerances.

[NukeGoose]

A LP tank will allow you to shoot further into the tank. With a 400 psi output on a 4500 psi tank, you get 4100 usable PSI. With an 800 psi output, you get 3700 usable PSI. Once your tank pressure drops below your tank's output pressure, the output pressure drops, and if your inline reg is set to handle 800 psi (or your gun is set to run on 800 psi) and the input drops to 600 psi, you'll encounter inconsistency. However the LP tank cannot be used on some guns.
And if your inline regulator creeps, it'll put a max of 450 or so PSI into your gun instead of 800 which could lessen the damage.

[cletus]

The output pressure doesnt matter when it comes to shooting more shots out of a tank, the input pressure of the gun does. Your gonna get just as many shots out of a hp tank as with a lp tank on the same gun. You gauge doesnt just stop at the output pressure now does it?

[NukeGoose]

Do you want to run your gun with 600 psi going into your inline regulator when it's set for recieving 800 psi?
No, you don't. The output on your inline regulator will change because the input pressure to it is changing, and therefore your velocity will change.
You'll get an extra 400 usable PSI out of a LP tank.

[11_Mile_TMaster]

Do you want to run your gun with 600 psi going into your inline regulator when it's set for recieving 800 psi?
No, you don't. The output on your inline regulator will change because the input pressure to it is changing, and therefore your velocity will change.
You'll get an extra 400 usable PSI out of a LP tank.

Velocity change will likely be minimal on a decent reg. I think Palmer regs are something like 70:1 Ratio, 92:1 on the Fattie Stabalizer...

800-450=350
350/70=5.
5 PSI operating change at 450 PSI.

So, you're probably going 'not everyone has a palmer reg!'
well, I think, your basic PMI reg has something like a 40:1 ratio or so. We'll assume 35 for giggles, but I could be wrong.
350/35=10
10 psi operating change.

We're talking relatively negligible numbers.

[Won Hunglo]

Put HP in a LP Angel & you will not be able to chrono under 300.

[RenagadeOfFunk]

less work for the gun = less problems...

...use HP on mags, or just do what i did...

got a maxflow tank

[NukeGoose]

Most regs are 35:1 I believe. That means that there's a 10 psi difference in the operating pressure - and on a gun that would normally run on a LP tank ( <200 psi op pressure) it's enough of a difference to cause a change in velocity.
Correct me if I'm wrong, but I believe that in single-stage regulators (most inlines except for the Max-Flow) a decrease in the input pressure causes an increase in the output pressure? This would mean that you get an elevated velocity from the 800-400 psi range.