The reply I usually give around the shop for this is that a lot of it is preference based. The longer your barrel is, or the tighter the bore, is not really going to affect your accuracy. Your best bet for the most accurate shot is purely on the quality of your paintballs and how clean your barrel is.
Different lengths are used for different things, but the most common is longer barrels can be easier to point, and manipulate airbunkers with, while shorter barrels allow you to stay more compact in an environment that may not have air bunkers. Shorter barrels also usually tend to be louder when shooting your marker.
Bore sizing your paint, and having a different selection of bores is to match up with the size of the paintballs. If you are using an older closed bolt operated marker(where the bolt closes on the paintball, chambering it in the barrel itself at rest) it is quite necessary to perfectly match the bore of the paint to the barrel so the ball doesnt roll out the front end. Bore sizing your paint can also give you greater efficiency as you are not using as much air to propel the ball out the barrel. Less of it escapes around the ball, and you can notice this while shooting over the chronograph when adjusting your markers velocity.
A good barrel I would recommend around that price would be the Eigen Barrel or Lurker Barrel from Lurker Paintball. Very quiet, small bores to match most of todays smaller paint sizes, and cost friendly.
Last edited by killiam : Yesterday at 11:33 PM.