[gandar]

Sorry, what I meant by that was that a tightbore doesn't hug the BB on all sides, (the concept of rifling that Drach is stuck on) I know they bounce around, hence the benefit of the Twist barrels (keeping it floated in the centre of the barrel). What I was getting at, was that a tighter bore would have less space around the BB for the air to pass by, thus allowing a higher velocity/power with the Twist barrel.