Ok, I am opretty sure that the little holes on the sides of barrels are called porting bu tmaybe I am just stupid. Anyways, is this beneficial? It seems to me as soon as the first hole comes the ball would lose all pressure behind it. The stock minimag barrels have no porting. Many othr barrels do have it. WHich is better?
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It takes a big man to cry. It takes a bigger man to laugh at that man. -
Without porting the barrel will explode, thusly killing everyone."What we have to accomplish at this time is all the more clear: relentless criticism of all existing conditions, relentless in the sense that the criticism is not afraid of its findings and just as little afraid of the conflict with the powers that be."
- Karl Marx -
more porting = less efficient
less porting = more efficient
more porting = more quiet
less porting = more loudComment
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Oooh.. I want to see a flatline blow!Originally posted by -Carnifex-
Without porting the barrel will explode, thusly killing everyone.Comment
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The ball accelerates until it reaches the porting in the barrel. At that point the air pressure escapes out the holes due to less resistence than pushing the ball. The result is that the ball only accelerates in the nonported section and immediately starts to slow down at the porting. The dispersion of air out 360 degrees around the barrel also allows the noise to be reduced because there is less of a blast.
Using the mag as an example, a good efficient barrel is around 11 inches long without porting. If the barrel is ported after the first 6 inches then the gun needs to shoot more air to accelerate the ball faster so that it reaches its final velocity in a shorter distance. This makes it more inefficient.Except for the Automag in front, its usually the man behind the equipment that counts.Comment
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yep. SP or other barrel manufacturers claimed porting makes a barrel more accurate, WRONG.
It will make it quieter and it will make it less efficient. I personally shoot a Lapco barrel, which has 11" unported, its loud as hell, but i coulndt care
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don't forget the most important thing- it looks cool.
sigs are overrated.Comment
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yeah, thats why i dont like my JJ edge kit. theres way too much porting, i'v been thinking of blocking off some of the holes.
my old JJ barrel (that ceramic one) is nice, it doesn't have porting til the end, which i like, has the efficientcy and isn't as loudComment
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didnt tom kaye write an article in APG about barrel prting a while ago or am i thinking of someone else?
** AO-IL **
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what did it say?Comment
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i couldn't find a link to it at APG's site but it talked a lot about why theres porting. He said something about the ball feeling humongous amounts of g-forces and that proting helps releive the strain on the ball by venting gasses. Someone should ask him for a link or summary or something. I'm not sure if i still have the issue.
*EDIT* i think the name of the article was 50,000 fps, which evidently refers to the force on the ball as it first enters the barrel** AO-IL **
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its the June 2002 issue. the article is 50,000 fps and for somereason it doesnt appear in the past articles section of their site** AO-IL **
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Conspiracy against AGDOriginally posted by nt2004
its the June 2002 issue. the article is 50,000 fps and for somereason it doesnt appear in the past articles section of their siteComment
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i found the issue. its called barrels & pressure: barrel theory
long article. i still cant find any links to it** AO-IL **
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So the 8" unported minimag barrel is no good???It takes a big man to cry. It takes a bigger man to laugh at that man.Comment
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