Paint rolls out of my barrel during games, is my ball denet broken?
No, most likey your ball denet isn't broken, since autocockers fire in a closed bolt position when the gun is at rest a ball is in the barrel ready to fire. Nothing is stopping this ball from rolling out. The only way to stop this is get a good paintball to barrel match. A more expensive option is to get a barrel system for fpo fields where you can't pick what paint you use.
The few, the proud, the pbr snipers.