How long is to long?? At what size does your barrel start to lose power??
Posted 18 November 2009 - 02:05 PM
Now to your question...
Which Tippmann? This matters because if you're going to buy a barrel, you'll want to pick something with the correct threads (since you said "it doesn't fit" I'm assuming that's the issue).
Related question, what threading was the barrel?
There's several barrel threads out there - the closest to universal is perhaps the "autococker" threading.
In the case of those that are relevant (Tippmann), there are two thread types:
1. 98 - Tippmann 98 / custom pro / 98 custom.
2. Pro carbine (sometimes called A5) -- Works for pro carbine, A5, X7, Triumph (I think? 98% sure) and the TPX.
Moving on to length.
For a paintball marker, ideal barrel length is anywhere from 10-14 inches, depending on your personal preference. You want about the first 6-8 inches of length to be unported (for the paintball to accelerate up to speed). After that it's also personal preference - more porting will result in a quieter marker, though Tippmanns tend to be loud regardless of what you do to them.
A 20 inch barrel offers no advantage to a 14 inch barrel. You can use one if you prefer, but most find it awkward to handle in the field and since there's no benefit for the added length, most don't use them.
It's not "wrong" per se, just doesn't do anything positive.
On the subject of "losing power," the answer is you won't. A Tippmann adjusts velocity by choking off gas that heads through the bolt and propels the paintball. You'll use the same gas regardless of barrel length.
As far as 12 versus 14 inches goes, there's only one deciding factor -- personal preference. Whichever you like better is the one to go with.
This post has been edited by Thalion: 18 November 2009 - 02:08 PM
Posted 18 November 2009 - 03:21 PM
Posted 18 November 2009 - 03:25 PM
Posted 18 November 2009 - 03:41 PM
Posted 18 November 2009 - 03:52 PM
PTI Certified Basic Airsmith #2773 : UE Paintball Club Member
Posted 18 November 2009 - 04:02 PM
Posted 18 November 2009 - 04:50 PM
good air efficiency
bad accuracy - in general
easy to maneuver
medium barrels(12-14in) *****best bang for the buck*****
normal air efficiency
decent to maneuver
not as air efficient
same accuracy as medium barrels
sometimes quieter than medium barrels depending on porting
can be hard to maneuver
really long barrels(18-REALLY REALLY LONG)
NOT air efficient
same accuracy as medium barrels
sometimes quieter depending on porting
impossible to maneuver
But like I said, length doesn't matter, its width. The size of the paint compared to the bore size of the barrel. If your local field has a pro shop, buy some paint and ask to see all of the barrels you can use for your gun. Then find the best match. Use the search function on the forums to find the paint to bore test. I really don't want to explain it lol.
Posted 18 November 2009 - 05:21 PM
While it's conceivable that a longer barrel could use more air (though to what degree of impact it has I am uncertain), in the case of a bone stock Tippmann (less the barrel), that's not the case.
A Tippmann uses the same gas per pull of the trigger regardless, velocity is controlled by restricting how much goes forward to the bolt/paintball and how much is expended on the "blowback" or wasted/unused. A lot of air is wasted with the Tippmann design - it's easily possible to have a 20" barrel chrono'd at field limit with them, and it's using the same air it would with a shorter barrel (just more air would be actually used to propel the paintball instead of wasted/resetting the bolt)
Posted 18 November 2009 - 06:46 PM
This post has been edited by Xakk: 18 November 2009 - 06:47 PM
Posted 18 November 2009 - 07:24 PM
Well, that falls under the category of "it depends."
If the marker relies on a regulator for velocity, then technically speaking yes. From a practical standpoint, the actual loss in efficiency will vary. By "practical," I mean "will you actually get a significant number of less shots?"
A stacked-tube (spyder and clones) will lose a very small amount of efficiency over a long barrel (5 shots or less?) because the hammer hits the valve harder and leaves it open a fraction longer.
Will it be less efficient? Technically yes. Will it be noticeable? It depends.
Posted 18 November 2009 - 08:14 PM
Matching your paint to your bore size keeps all the air behind the ball so force is exerted equally. If the bore is too big, some air escapes around the ball so equal force is not always exerted equally on the ball all the way around. The escaping air is "force" you have lost to propel the ball. So you have to turn up the velocity adjusting screw to make up for the lost "force" by allowing more air to be put behind the ball. The correct bore also keeps the ball centered in the barrel and does not allow it to wobble/bounce around as it goes down the barrel. Keeps it straight the whole way thru so it comes out the barrel centered. Not off to one side or the other. We may be talking thousandths of an inch to one side or the other but every little bit helps when you are shooting something that is not the most aerodynamic to begin with.
Just my 2 cents on the subject
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Posted 18 November 2009 - 08:25 PM
I'd rather slightly overbore to escape any occasional barrel breaks and have greater consistency than have a less consistent marker and a "perfect" match.