axis of the bore

axis of the bore

[′ak·səs əvthə ′bȯr]
(ordnance)
The imaginary central line of the bore of a gun.
References in periodicals archive ?
Tenders are invited for Design, Manufacture, Supply, Supervision Of Erection, Commissioning, Acceptance Test, Machining Trial On Standard Specimen, Alignment Of Barrel And Proving Of Alignment System At Purchasers Works, After Sales Service, Confirmation To Supply Of Spare Parts For Adequate Period Of At Least 10 Years Of Heavy Duty Conventional Alignment Lathe For Alignment Of The Axis Of The Bore With Respect To The Machine Axis As Well As Rough And Finish Turning , Threading And Facing Operations.
Many have criticized this feature, claiming a short neck would not hold a bullet in proper alignment with the axis of the bore.
Add to that the straight-line stock design, which puts the shooter's shoulder in direct alignment with both the recoil axis of the bore and the linear axis of the gas-impingement, minimizing muzzle flip and subjective recoil.
With a 1911, the axis of the bore sits lower to the hand than many of the more modern guns it competes with.
Usually, though, most of the weight (stock, receiver, magazine, lockwork, triggerguard and floorplate) is below the axis of the bore.
Mechanically driven parallel anvils extend simultaneously, and their consistent pressure results in more accurate readings and true alignment to the axis of the bore.
It extends straight back from the receiver, directly in line with the axis of the bore and receiver.
The vast majority of the rifles used here are of military origin so the issue of mechanical off set or the difference between the height of the sight and the center axis of the bore comes into play.
The height of the sight over the axis of the bore means the projectile may strike lower than the point of aim at close distances -- a very important point in hostage or precision placement scenarios.
The shoulder doesn't collapse noticeably, but it yields enough to allow the seated bullet to be out of alignment with the axis of the bore when chambered.