length of bore

length of bore

[′leŋkth əv ′bȯr]
(ordnance)
The length of the bore, measured from the rear face of the tube or barrel to the muzzle, expressed in inches or calibers. Also known as length of barrel; length of cannon; length of tube.
References in periodicals archive ?
"We were able to fabricate the entire length of bore before installation because of the flexibility of PA 12 pipe," Yeater said.
This alternative uses g-functions to determine the design length of bore fields.
But today, ammunition manufacturers employ advanced propellants that allow much faster ignition at much lower pressures than previously, so that bullets get up to their specced velocities in less length of bore with less pressure and more consistent propellant burn than was formerly the case.
* Length Of Bore. New records are continually being broken for length of directional drilling bores for various pipeline diameters because of advances in drill rig and drill tool technology, but there are limits.
To successfully complete longer bores, Dolan says contractors must ensure they have the correct size of HDD machine for the length of bore they will be drilling and the size of pipe they'll be installing.
"As the pipeline work in the Haynesville Shale has increased, so has the size of pipe and length of bores," said Smith.
Average length of bores for the mains is from 450 to 500 feet at an average depth of 36 inches.