Paintball

[mac3kuby]

what is the difference, what are the pros and cons, which should I get on a houndstooth?

[IndustrialHalo]

Last I checked, the difference was $42

Sorry, it's the difference between 2 lines or porting or 4 lines. Either way they swirl around the barrel similar to another company's patented porting style, but not as far back the barrel.

There is a mild reduction in noise, but it's nowhere near as dramatic as porting versus no porting. It comes down to how quiet you want it, but I'm not sure it's worth the $ difference to dual port over a single ported barrel.

[Shade]

I think you've got it the other way around, Industrial. For single venting compared to no porting is $42, but the difference between single and double venting I believe is $18.

For a Houndstooth, I would recommend either a ported or single vented barrel. IMO, there will be little difference between a single and double vented barrel. The larger difference will be between the ported and unported barrel.

A little advice on porting: If your gun operates at under 450psi then porting is worth while for sound control. Anything above that and it's money better spent elsewhere.

[Wycke]

Originally Posted by Shade

A little advice on porting: If your gun operates at under 450psi then porting is worth while for sound control. Anything above that and it's money better spent elsewhere.

Hrm...I've always heard that with lower pressure guns, an unported barrel was preferable from an efficiency perspective. It makes sense, too, if you think about it. In a typical LP setup, you've got a larger volume of air at a lower pressure pushing the ball down the barrel. Once the ball hits the porting, air is going to take the path of least resistance and go out the porting and the ball will begin to decelerate. In order to have enough air to push the ball out of the barrel, you've got to increase the valve dwell in order to increase the volume of air. Kind of a catch-22.

However, a LP setup with a heavily ported barrel will probably be very quiet, but probably not very efficient, at least not as efficient as it could be with a solid, unported barrel. It's all semantics, though...there are no hard and fast rules because there are just too many variables involved...

[mac3kuby]

I am planning on using a co2 tank, most likely a 9oz or 3.5oz. I guess the single venting is best for me?

[Decker]

Go for the broken ear drums, go unported!!

[Shade]

Originally Posted by Wycke

Hrm...I've always heard that with lower pressure guns, an unported barrel was preferable from an efficiency perspective. It makes sense, too, if you think about it. In a typical LP setup, you've got a larger volume of air at a lower pressure pushing the ball down the barrel. Once the ball hits the porting, air is going to take the path of least resistance and go out the porting and the ball will begin to decelerate. In order to have enough air to push the ball out of the barrel, you've got to increase the valve dwell in order to increase the volume of air. Kind of a catch-22.

However, a LP setup with a heavily ported barrel will probably be very quiet, but probably not very efficient, at least not as efficient as it could be with a solid, unported barrel. It's all semantics, though...there are no hard and fast rules because there are just too many variables involved...

Oh certainly, an unported barrel will always trump a ported barrel as far as efficiency goes, but I was saying that for sound control, porting is much better suited for a low pressure gun.

[Drum]

Well, for me, nothing about "low pressure" gun designs has ever made logical sense.

That said, I have had extensive experience with a pair of Hurricanes, one of which is ported and one of which is not. I find that the ported gun (as it happens it is dual ported) is generally more accurate than the unported gun.
I have had similar experiences with Blazers.

Granted, Hurcs are not low pressure, and I have not ever bothered to test efficiency but I have never noticed a significant difference in that, like I have been able to observe with the porting.

That said, I hate porting.

D/

[NoForts4Me]

Originally Posted by Drum

That said, I hate porting.

So, would you mind sharing with us why?

[Wycke]

Originally Posted by Drum

That said, I hate porting.

Is your cat making the same face you make when you have to clean all the little itty bits of paint and shell out of that porting?

As for the difference in accuracy between those two Hurcs, Glenn himself would probably attribute that to minor differences in the tolerances, honing pattern of the barrels, or one of the other dozens of variables rather than the fact that one is ported and the other isn't. That's just coincidence. Saying that the ported one is quieter, I'd buy, but more accurate (because of the porting) - no sale!