Strip
Real bullets are not paintballs either. Paintballs are spherical, with an internal fluid body. Rifling has been done, but it doesn't work out well, particularly when you get a break in the neck/breech/bolt head/barrel area. It's very difficult to get the paint out of the grooves. As per the collegiate paintball thread, the single most important thing is paint to barrel match. It does not really matter what kind of gun the barrel is attached to. Also, you have to contend with energy loss over the flight. The more energy loss, the less chance of a break. The gun can't do anything about that, since the object is totally disconnected from the gun the millisecond it leaves the barrel.
Two objects with equal drag, same airfoil, fired at the same velocity (mandated to either 280 or 300 fps by insurance for all markers in play), at the same altitude, will travel the same distance every time.