I rember reading an article on barrel lenght, (I think it was from warPig) Claming that after 8'' of barrel the ball slows down. Do you guys rember this?
Not slows down.. The idea was that it did not significantly improve on accuracy.
While I don't completely agree with it, there is merit on it...
We are dealing with just paintballs... not perfect... That's where most of the problem comes from.
Personally, I think 12 to 14 is perfect on both accuracy and efficency.
It works like this:
The longer the barrel, you do increase accuracy, but you also loose efficency. The ball leaves the barrel at 300 fps (for argument sake) but in the barrel is drag... So the longer the barrel, the more you need to turn up your fps. You can try this on your own if you wish.
Put on an 18" barrel, and set it for 300 fps. Put on a shorter barrel 8" barrel, and you'll be shooting a lot higher fps.
So.. looking at it like that.. if you did it the OTHER way... have a short barrel, say 8".. and you put on an 10" or higher.. then yes, it WILL slow down. Because of the extra barrel length and drag on the ball...
I think there is a fine line between accuracy and efficency... I've been trying to find it. Maybe this winter I'll find the perfect barrel length.
Everything said above is correct. However, the averge paintball barrel is a 2-peice and thus the second portion of the barrel does not touch the paintball (in most 2 peice barrels). For instance, the Freak is .700 at the tip.
What is said above applies only to one peice straight bored barrels.
There is also a point and aim factor. I seem to aim better with a barrel longer than 10 inches. 14 to 15 seems ideal to me. Not too long but I can aim well and also mold airball bunkers with my barrel.
Was it the article that Glen Palmer wrote?
I saw something about shooting a short barrel (like the 6in Phantom) that if you chronograph it a 280 fps that in actuality the ball is still accelerating after it leaves the barrel.?
Actually, i have found that the ball does a significant portion of its acceleration in the tip of a two peice barrel. Try taking a freak insert out and using just the barrel some time. Beside the incessant barrel breaks, it actually isnt super hard to acheive 300 fps.
Yes, but you are still using some of that 8", it just happens to be at the latter end of the barrel without an insert.
Personally, I like the idea of overboring a barrel after about 8-10 inches, and punching a bazillion holes in it. I've found that I'm a lousy first shot, so getting to take one or two more is nice. A barrel with lots of holes in the front helps quiet the shot.
Smart Parts used this phenomenon as basis for their claims that their All American barrels were the most accurate. The second half of the barrel, just like the "front" of their freak barrels, was bored to .700. The spiral porting was purported (no pun intended) to direct or control the escape of this pressure, reducing the turbulence that the ball might experience as it left the tip of the barrel. Further, they claimed that the spiral arrangement of the ports imparted a spin on the ball to improve the accuracy of the shot. They never provided any scientific data to back up any of these claims, but at one point in time everyone and their mother had an AA on the field. Advertising is an extremely powerful tool.
In fact, I believe a few years ago that either Doc, Have Blue, or some other airsmith used a high-speed camera to capture the plume of vapor following a ball out of the tip of an AA barrel and also show that almost no vapor exited from the porting. I don't know if they also debunked the "spin" part of SP claims, though.
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