bore axis

bore axis

[′bȯr ‚ak·səs]
(ordnance)
The longitudinal center line of a gunbore.
References in periodicals archive ?
The Curve also offers its bore axis sighting system--"plus" shaped lines on the back of the slide meant to help you get the gun aimed correctly.
For home defense situations, the bullet will always be between the bore axis and our line of sight, so our rounds will impact about 2 inches low.
On these rifles, whether iron-sighted or topped with optics, the line of sight is distinctly higher than the line of the bore axis.
The result is a far more concentric and consistent alignment of the bullet with the bore axis, more positive and non-distorted land/groove engagement, consequent enhanced accuracy and less wear and tear on the bore.
The XD-S is a striker-fired design offering a lower bore axis than what is usually found on a comparable hammer-fired equivalent.
The most important specified requirements include the achievement of cone bore axis co-axiality with the axle rotation axis, as well as perpendicularity of end surface of shaft as against its rotation axis.
The bottom line is to zero out as far as you can identify an enemy to engage; 200 meters and further is more than sufficient to ensure that you have removed the bore axis, laser aiming light disparity.
Rick, you are correct that, due to a low bore axis, the recoil from the bottom barrel causes the gun to come straight back in your hand, and because the top barrel has a higher bore axis, it will slightly rotate up with the recoil.
The rear of the slide sports a bore axis sighting system designed for close-range shooting.
The L9-A1, like the M9 before it, has a very low bore axis and a steep, Lugerish grip-to-barrel angle.
With the combination of target-style sights and a low bore axis, the CZ 75 Tactical Sport will make average handgunners shoot like experienced marksmen.
One question shooters have had about the P320 regards bore axis.