Brass has a lower friction co-efficient than aluminum or steel;, making it easier to push a friction fit object (your paintball) down it. This means less gas is used.
Accuracy depends on a few things:
1. How good is the shooter? Your gun is only as accurate as you.
2. Is the paint fitting well in the barrel? A good bore fit will make all the difference.
3. Is it rifled? Rifled barrels are nothing other that an attempt to separate you from your money. In a firearm, they work excellent, because the projectile can bit into the rifling when it is deformed by the explosion of the powder charge. In a paintball gun, you are firing a a sphere (which inherently is a VERY un-aerodynamic item) int air. No spinning could affect your paintball, even if you spun the paintball to 10,000 rpm before it left the barrel.
For more info on barrels, check out Tom Kay's (the inventor of the auto-mag and countless other paintball innovations) tech tips:
http://www.automags.org/resource/tech/t ... _eff.shtml
As well as see what Glenn Palmer (the man who invented the automatic cocking process in a paintball gun) has to say about barrels. They make all brass barrels, many with no porting, no fanciness. And they are often spoke of as the MOST accurate barrels on the market:
http://www.palmer-pursuit.com/techpages/barrels.htm
Also, J&J has a very good history of making incredible barrels. As for it wearing, it will do that, especially if you don't clean it well, and treat it right.
_________________
Later,
Bryan "Azzy" Spiegel
www.riversiderenegades.com
[url:3eidvjl2]http://www.PaintBallCity.org[/url:3eidvjl2]