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Old 01-15-2012, 02:35 AM #1
07PROTORAIL07
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12" barrel

Is a 12" barrel good for my 07 proto rail. And its a 689.
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Old 01-15-2012, 02:37 AM #2
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bore needs to be smaller.

Barrel length is perfect.
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Old 01-15-2012, 02:46 AM #3
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I took it off my brothers azodin. And on the box it just says 68. So I don't know if it really is a 689. Or what?
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Old 01-15-2012, 01:04 PM #4
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it's goign to be a .689 or .691.

But what state/province do you live in? Depending on your location, a .689 isn't that huge of a bore.
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Old 01-15-2012, 09:36 PM #5
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I have a .689 Stiffi on my Cocker, and because I live in Colorado this tends to be just fine. As for the barrel length, I've had good luck with 12", but my other barrels are 14" or 18".
Like YeloSno said, it depends on your area. Paint sizes are different.
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Old 01-16-2012, 12:56 AM #6
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2nw and yelo hit it on the head. What really determines accuracy is paint quality. The slickness of the inner surface helps somewhat, and so does not tightness. But the main thing is paint quality. I've run 689 as of late here in Colorado, in the summer for some reason I got a case that was 696. Best thing to do is to find out the general sizes of your local field and plan accordingly.
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Old 01-16-2012, 01:25 AM #7
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Quote:
Originally Posted by 2nwyka View Post
I have a .689 Stiffi on my Cocker, and because I live in Colorado this tends to be just fine. As for the barrel length, I've had good luck with 12", but my other barrels are 14" or 18".
Like YeloSno said, it depends on your area. Paint sizes are different.
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I think 18"'s excessive, though.

All velocity "benefits" kind of end at about 9", and then anything over 16" just causes unnecessary turbulence, or as I call it, paint lag.
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Old 01-17-2012, 05:33 AM #8
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its personal prefrense really, i never go under 12 and never over 14 as i think it just uses to much air to push it out. it depends on climate to i play in alaska so i do a bit smaller bore for whem temp drops.bottem line if you find one that you really like just use it.
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Old 01-21-2012, 08:45 PM #9
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I personally like 12''. 14'' barrels can be a little annoying to move behind bunkers a whatnot, but they still work just fine. Bore just depends on your climate, smaller for colder climates.
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Old 01-21-2012, 10:20 PM #10
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it depends on your playing style as well. 12" for me is just to short and I try to stay around the 14", (or 6-8" if playing with some of my older barrels to be weird that day).
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Old 01-22-2012, 11:10 AM #11
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16+ inch barrels are the most accurate (at 16' it caps) i would suggest getting (and this is separate items so you can get it cheap) front: tip to make it 16', back, and inserts sized: .684, .687, .689, then you will either over or under bore. if you dont know how to do that please PM me
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Old 01-22-2012, 12:09 PM #12
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Quote:
Originally Posted by YeloSno View Post
I think 18"'s excessive, though.

All velocity "benefits" kind of end at about 9", and then anything over 16" just causes unnecessary turbulence, or as I call it, paint lag.
While having a barrel that long definitely has it's disadvantages in terms of efficiency, it does have some (few) advantages. The ability to push into air bunkers and minimize your profile, for example. I have an 18" barrel on my Shocker and, while I had to refill after every game, it was rare that I got hit while snap-shooting.
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16+ inch barrels are the most accurate (at 16' it caps) i would suggest getting (and this is separate items so you can get it cheap) front: tip to make it 16', back, and inserts sized: .684, .687, .689, then you will either over or under bore. if you dont know how to do that please PM me
What? I'll just focus on the first statement: Please present a legitamite argument explaining how 16" (one apostrophe - ' - represents feet, two - " - represents inches) barrels are the most accurate.
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Old 01-23-2012, 04:41 PM #13
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They are not the most accurate per say. But research has been done on it, and at 16 accuracy is the same as 22. perhaps some consistancy changes but I'm not positive on that fact or not. Hence why only a few companies make over 16inched barrels
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Old 01-23-2012, 09:47 PM #14
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It is true that a longer barrel does not correlate to better accuracy, but 16" is certainly not the most accurate. The ball needs to be guided no more than 5-6 inches if I remember correctly, it may be closer to 8, but I don't recall. Beyond that the ball has already taken shape and begun decelerating, so it's path is for the most part set.

Of course, any wind or defects in the ball will effect it after it exits the barrel, but that doesn't change based on the barrel length.
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Old 01-28-2012, 10:05 PM #15
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16+ inch barrels are the most accurate (at 16' it caps) i would suggest getting (and this is separate items so you can get it cheap) front: tip to make it 16', back, and inserts sized: .684, .687, .689, then you will either over or under bore. if you dont know how to do that please PM me
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They are not the most accurate per say. But research has been done on it, and at 16 accuracy is the same as 22. perhaps some consistancy changes but I'm not positive on that fact or not. Hence why only a few companies make over 16inched barrels
I lol'd pretty heftily.


Bore, control bore length, paint quality, paint/bore matching, and porting will affect ball flight more than anything.

I've seen 8" barrels shoot farther and with better precision than 16" barrels.


That being said, your performance drops after 12" as far as consistency/efficiency is concerned. So anything after 12" will also begin to hurt accuracy. It's most noticeable after you exceed 16".


You can totally run about and get away with (and with some SERIOUS range) with a 10" barrel if it's something like a disruptive barrel, where they have a very smooth and high quality control bore that is 7.5 or 8" long (research shows that's pretty much the optimal length bore) and it is a bore that's about .001-.002" (to hold the ball in place) smaller than your paint.

So I love short barrels, so I get high quality (SS and Brass) freak inserts for my short and tactical barrels that accept it.

Then I have the eigenbarrels and eventually I'll hook it up with some Thin Air Sports and Disruptive barrels.
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Old 01-30-2012, 08:45 AM #16
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I lol'd pretty heftily.


Bore, control bore length, paint quality, paint/bore matching, and porting will affect ball flight more than anything.

I've seen 8" barrels shoot farther and with better precision than 16" barrels.


That being said, your performance drops after 12" as far as consistency/efficiency is concerned. So anything after 12" will also begin to hurt accuracy. It's most noticeable after you exceed 16".


You can totally run about and get away with (and with some SERIOUS range) with a 10" barrel if it's something like a disruptive barrel, where they have a very smooth and high quality control bore that is 7.5 or 8" long (research shows that's pretty much the optimal length bore) and it is a bore that's about .001-.002" (to hold the ball in place) smaller than your paint.

So I love short barrels, so I get high quality (SS and Brass) freak inserts for my short and tactical barrels that accept it.

Then I have the eigenbarrels and eventually I'll hook it up with some Thin Air Sports and Disruptive barrels.
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Old 01-31-2012, 10:33 PM #17
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Can anyone tell me if .692 and .693 too big of a bore size? It came wtih a geo from the nation.
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Old 01-31-2012, 10:38 PM #18
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Can anyone tell me if .692 and .693 too big of a bore size? It came wtih a geo from the nation.
Depends on the size of your paint.
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Old 01-31-2012, 10:51 PM #19
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Can anyone tell me if .692 and .693 too big of a bore size? It came wtih a geo from the nation.
Most likely, but it will work with any paint. Most paint nowadays is smaller, a .685 will fit most current paintballs.
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Old 02-01-2012, 12:23 AM #20
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They are not the most accurate per say. But research has been done on it, and at 16 accuracy is the same as 22. perhaps some consistancy changes but I'm not positive on that fact or not. Hence why only a few companies make over 16inched barrels
provide source of research...?
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Old 02-01-2012, 12:48 AM #21
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provide source of research...?
There was an article in one of the big mags a few years ago comparing barrel length from a purely scientific standpoint. The general consensus is that the you're just wasting air once you get up to 16+ inches. The only reason you would want a barrel that long, or longer, is to push through brush when playing in the woods.
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