Porting

[tviz]

I am aware porting serves the purpose to quiet the barrel, but, it has to do something elce. Some people say it increases accuracy slighty and I somewhat agree with that crowd.

Well, i realy think there needs to be a complete explanation of porting somewhere.

[m98sniper15]

No, porting only serves the purpose of quiteing the shots. It does nothing to increase or decrease accuracy.

[Rogue852]

i agree with m98sniper

i beleive it serves to quiet the barrel and depending the way the porting is made can help the barrel self clean, like the evil pipe kits porting.

[MecTurtleCocker]

It will increase accuracy to some extent. The pressure differential between the gas trapped behind the ball and the atmospheric pressure will cause the ball to distort as it leaves the muzzle. Porting regulates this differential, and makes it so that the decrease in pressure and change in differential is more gradual, so it is quieter and easier on the ball.

[tviz]

ya, i think if all it did was quiet someone would make a barrel without porting. And this is theoretical but if ther was an 8 with no porting but a perfectly polished interier surface i bet it would curve like no other.

[Kowz_76]

I dunno, lapco bigshots have barely any porting, just a little bit maybe an inch from the end and they are just as accurate as other barrels in the same category. It doesn't seem to me like porting does much except make the barrel quiet.

[Rogue852]

i shoot a cut off 6" nothing wrong with it. only have 4 holes for porting. its loud but just as good as it was when it was longer.

[^_^]

ya, i think if all it did was quiet someone would make a barrel without porting. And this is theoretical but if ther was an 8' with no porting but a perfectly polished interier surface i bet it would curve like no other.
You can get Palmer barrels with no porting..

[m98sniper15]

It will increase accuracy to some extent. The pressure differential between the gas trapped behind the ball and the atmospheric pressure will cause the ball to distort as it leaves the muzzle. Porting regulates this differential, and makes it so that the decrease in pressure and change in differential is more gradual, so it is quieter and easier on the ball.


This really doesn't make any sense. What your saying really matter on the quailty of the paintball not the pressure from the air. It would affect the paintball to slighty you wouldn't even notice. If you have good paint and it has no "seem" the paintball won't spin, leading to great accuracy.and I don't think that the air from your tank is touching the paintball at the muzzle.

[MecTurtleCocker]

Actually read it again. The pressure differential can distort the paintball upon exiting the muzzle. Finish 10th grade then talk to me again...Porting will decrease this pressure differential, increasing accuracy.

[m98sniper15]

Acutaly I'm in 11th. I skiped a grade. And I said I don't think the air from your source is touching the paintball at the muzzle, because the paintball is at enough speed and it is traveling faster than the air itself. This would not cause the paintball to distort like you said. Sorry if I sound mad, because I'm not.

[MecTurtleCocker]

If there was less pressure behind the ball than there was in front of it, the firing would be silent :)

[Kowz_76]

Sorry Mec, but that's wrong. Think about pulling a syringe apart. Suppose that the squirty end is sealed, when you pull back on it, the pressure inside is less than the pressure outside and when you pull it out, it still goes pop. The sound isn't really coming from the ball exiting the barrel, it's from the gun shooting a bunch of air at 300psi (or whatever your gun may shoot at) The porting just releases that sound with less of an amplifier, like using a megaphone with or without holes in it.

[DarkeWolf]

Porting does have more of an affect than just the amount of noise when the ball leaves the barrel. It also affects the barrel's air efficiency.
Too much porting, or porting that is too big, will allow too much air to escape before the ball reaches it's maximum velocity. not giving enough push to the ball. thus, you have to turn up your velocity to compensate for the push drop.
If you doubt this- Take a marker, and use the same kind of paint. Put a J&J barrel (very efficient porting) on and chrono the gun. Now take the same marker, with the same paint, and chrono the gun with an older SP Teardrop. You'll see the chrono readings as lower, because the teardrop has crappy, inefficient porting.

Kowz- hate to partially disagree with you, but the example you gave is a bad one. But the syringe is a bad example. because if the needle end is plugged the air inside of it is put under a vaccuum (being sucked out from a sealed environment) as the plunger is being withdrawn. Thats why the air makes a pop when it's pulled loose enough to break the seal.