bore diameter

bore diameter

[′bȯr dī′am·əd·ər]
(ordnance)
The interior diameter or caliber of a gun or launching tube.
References in periodicals archive ?
44" for bullet/barrel bore diameter, "Henry" for make of rifle and then "Rimfire" for type of ignition.
The groove diameter is always greater than the bore diameter and should be close to the bullet diameter if you want good accuracy
The 7mm in "7x57" is the bore diameter, not the bullet diameter.
450 would have also been great choices, but if you truly want a stopping rifle, it is hard to beat pure bore diameter.
The machine has all but eliminated the pre-rifling lap, which is the most difficult and time consuming and the hone produces a consistency in bore diameter that is head and shoulders above lapping, within two to three millionths of an inch end-to-end.
The X-Slim boasts the largest ratio of flow-channel diameter to installation bore diameter on the market.
Several sizes of ABMs are readily available in any bore diameter with standard English (inch) or metric (mm) casing sizes.
Quite a few revolvers have been produced with the forward portion of the cylinder chamber smaller than the bore diameter.
The engine can be sleeved to decrease the bore diameter to get the displacement below 2000cc without altering the engine's basic architecture.
The larger bore diameter of the Roughneck housings allows the hammer to send more air to the internal piston for maximum efficiency, resulting in faster and harder blows.
Originally the Single-Six used a bore diameter of 0.