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Bore pitch is the distance between the centerline of a cylinder bore to the centerline of the next cylinder bore adjacent to it in an internal combustion engine. It's also referred to as the "mean cylinder width", "bore spacing", "bore center distance" and "cylinder spacing".
The table below shows common performance parameters for several .380 ACP loads. Bullet weights ranging from 85 to 95 gr (5.5 to 6.2 g) are the most common. Penetration depths from 6.5 to 17 inches (16.5 to 43.2 cm) are available for various applications and risk assessments.
aka 6.2×57mm RWS. Necked down 6.5×57mm. The 6mm Remington is a carbon copy. 6×62mm Freres 1983 Germany 1 R 6×62mm 3460 2260 0.243 62mm also 6×62mmR, based on 9.3×62mm case. 6mm Lee Navy: 1895 US 0 R 6×60mmSR 2560 1629 0.236 60mm Service cartridge of the United States Navy and Marine Corps from 1895 6 mm PPC: 1975 US R 6.17×38.5mm 3212 ...
Source(s): Hodgdon Reloading Data Center [1] The .38 Long Colt , also known as .38 LC , is a black powder centerfire cartridge introduced by Colt's Manufacturing Company in 1875. In 1892, it was adopted as a standard military pistol cartridge by the United States Army for the Colt M1892 revolver.
Means that a feature of size is at the limit of its size tolerance in the direction that leaves the most material on the part. Thus an internal feature of size (e.g., a hole) at its smallest diameter, or an external feature of size (e.g., a flange) at its biggest thickness. The GD&T symbol for MMC is a circled M.
The bore axis of a firearm is the longitudinal axis through the geometric center of the gun barrel. In a rifled barrel, the projectile (bullet/ball, pellet or slug) will spin around the bore axis as it goes through the barrel. Boresighting is a process of placing one's line of sight down along the bore axis.
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By the 1880s, the 8 bore was a more practical caliber for elephant hunting, as rifles could be produced with a more manageable size, weight, and recoil, than could be had with the larger 6 bore, 4 bore, or 2 bore cartridges. Despite this, 6 bore cartridge rifles and cartridges could still be purchased. The 6 bore was only made obsolete by the ...