Special Ops Paintball: Barrel Distances - Special Ops Paintball

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Barrel Distances Rate Topic: -----

#1 User is offline   Ommar 

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Posted 29 December 2007 - 01:28 PM

I have a stock a5 with co2. I am thinking of getting a labco bigshot barrel but I don't know if i should get an 8, 12, 14" barrel. I was wondering if the difference in length will make any significant difference in accuracy or distance.
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#2 User is offline   Tenacious221 

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Posted 29 December 2007 - 01:30 PM

To a point, the longer the barrel the better your accuracy. Because the ball is guided for a longer period.

Your range will not ever be changed in any significant or noticeable fashion because 300fps is 300fps.

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#3 User is offline   TREE FITTY 

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Posted 29 December 2007 - 02:06 PM

Never go any higher than 16" unless you're into milsim though. Military Simulation players use barrels that exceed that length solely for looks, which is fine let ballers be ballers.

The thing with longer barrels is the amount of gas needed to keep up the ball's speed. For instance, a paintball coming out of an 8 inch barrel set on 300 fps will be about 300fps, maybe a little less due to friction. With, say, a 21" barrel, set it on 300fps and it will come out of the end of the barrel at LESS than 300 fps. Distance comes with fps, so you always want to keep your marker at the peak feet-per-second limit for the field. Therefore, to reach 300 on a 21" barrel, you might have to crank it up to about 310-320 fps. These are mostly made up numbers, but the point stands.

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#4 User is offline   ChuckAndrew08 

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Posted 29 December 2007 - 02:13 PM

i say 14 it will give u the best accuracy for the amount of gas
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#5 User is offline   thebostinian 

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Posted 29 December 2007 - 02:43 PM

length does nothing, really, as long as the barrel is quality. don't worry too much about it, go out and buy yourself a 14" J&J ceramic for $30.

<EDIT>
actually read original post. i'd go with the 12, but that's personal preferance.

This post has been edited by thebostinian: 29 December 2007 - 02:45 PM


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#6 User is offline   Piller 

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Posted 29 December 2007 - 04:36 PM

A barrel with 8-12 inches of unported length will offer the best efficiency. Anything longer/shorter and you won't be gaining any more efficiency out of your barrel. The more porting you have to an extent the quieter the barrel will be, but the less efficient it will be.

In colder conditions, with CO2 you may benefit from a longer barrel giving the gas a longer period of time to expand.

Accuracy is a little different than efficiency. It is rather dependent on the marker, but in most cases it follows the same 8-12 inch length. Longer barrels do not make your barrel more accurate. The idea is to have the ball coming out of the barrel with little to no spin at all. A slick surface is the key. You want something that is just long enough to stabilize the ball without something that is so long it begins the drag on the ball. Some think a longer barrel helps, but from my experience there are no noticeable advantages.

A 12" Bigshot is a great length. It is basically 10-11 inches of unported length with the last section being ported and having a muzzle break. The best efficiency from your barrel will always be achieved by matching your paint size with the barrel. The idea is to be able to blow the ball out of the barrel without the ball rolling out or you passing out trying to blow it out.
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#7 User is offline   The Shepherd 

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Posted 29 December 2007 - 05:21 PM

14 inch. You will notice a amazing difference in accuracy. You will be so amazed you even played with the stock barrel.
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Posted 29 December 2007 - 05:45 PM

I prefer 12" but its all up to you whether it suits you or not. 12" and 14" will be close in range and accuracy wont be that big of a difference.

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#9 User is offline   Ommar 

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Posted 29 December 2007 - 08:31 PM

so i take it that 8" is a bit on the small size, and either 12 or 14" is the ideal length?
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#10 User is offline   Piller 

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Posted 29 December 2007 - 09:14 PM

You can do just fine with an 8 inch, there just isn't any room for porting so they tend to be a bit louder.
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#11 User is offline   Wings 

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Posted 31 December 2007 - 11:11 PM

View PostTREE FITTY, on Dec 29 2007, 03:06 PM, said:

Never go any higher than 16" unless you're into milsim though. Military Simulation players use barrels that exceed that length solely for looks, which is fine let ballers be ballers.

The thing with longer barrels is the amount of gas needed to keep up the ball's speed. For instance, a paintball coming out of an 8 inch barrel set on 300 fps will be about 300fps, maybe a little less due to friction. With, say, a 21" barrel, set it on 300fps and it will come out of the end of the barrel at LESS than 300 fps. Distance comes with fps, so you always want to keep your marker at the peak feet-per-second limit for the field. Therefore, to reach 300 on a 21" barrel, you might have to crank it up to about 310-320 fps. These are mostly made up numbers, but the point stands.


Um... Not quite.

If you set your marker to 300fps the ball will leave the barrel at 300fps irregardless of if your barrel is 2" or 32". The velocity measurement on a paintball gun is the muzzle velocity; ie the velocity of the ball at the point where it exits the barrel. Every barrel is going to require a different setting on the velocity controls of the gun due to different diameters, different lengths, deferent finishes, etc. The paint itself and the ambient conditions will also effect the setting. This is why you need to check your velocity every time you go to play.

That said the length of the barrel has an effect on the amount of air required to get the ball up to 300fps. Anything below 14" and the ball will exit the barrel before the air is fully expanded. So you end up wasting some of the energy that had been stored in the air. Anything above 16" and the air will be fully expanded before the ball leaves the barrel. That means you lose some energy due to friction with the barrel beyond where the air is able to overcome it. So in effect the ball hits its max velocity and begins to slow down before exiting the barrel and achieving that muzzle velocity described above.

Generally anything between 5-16" is considered reasonable as the difference in air consumption will be minimal. Below 5" and you waste a very large amount of air and get very poor accuracy. Anything over 16" is just ungodly to maneuver.
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Posted 01 January 2008 - 02:46 PM

The 12" will be the most accurate but they will all shoot the same distance
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#13 User is offline   Millslane 

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Posted 01 January 2008 - 03:12 PM

Bad barrels need longer lengths to give better results.

Get a good barrel and all you need is 10"-12" at the most.

Good barrel are (in no particular order)
J&J
Lapco
Palmer Brass

just to name the main one. There's no reason to have a 16" barrel, its not more accurate anyone who says so does not understand and that goes for anyone.
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#14 User is offline   Ommar 

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Posted 01 January 2008 - 03:37 PM

THX
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#15 User is offline   Winston_Smith 

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Posted 01 January 2008 - 04:07 PM

The most important thing to be looking for in barrels is the bore, you want a nice smooth bore. This help with efficiency and also helps with accuracy. Also fit your paintballs to the bore of your barrel, you want it to fit tight but not to tight. If you can blow it out with minimal force that's good, you don't want it rolling out or to hard to blow out. As for length it's all pretty much preference, it is true that to short a barrel and to long a barrel are bad for efficiency. But I've yet to see anyone do a scientific study to find out what these lengths are.
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