The bolt directs gas via the exhaust valve onto the paintball in order to propel it. The bolt is an item that is the object of much debate. In particular there is the venturi vs standard bolt face debate. Venturi bolts have holes to distribute (or, as some would argue, disturb) the flow of gas striking the ball. Bonniched: If a gun has been ‘Bonniched’ (from the Latin term JohnBonnicheried; literally, ‘touched by the hand of God’), it has been customised to within an inch of its life. Bore Someone who talks about any sport except Paintball. Bore also refers to the diameter of a barrel or a paintball. It is important to match your paintball and barrel bores. Too tight and you get lots of breaks, too loose and you get a lack of accuracy.