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  2. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    Common on American rifles and pistols chambered for .223 Rem, .22 LR and 9×19mm. 1/2"-28 M12.7 1.270 mm Common on older European rifles chambered for .22 LR. 1/2"-20 M13.5 1 mm LH: Some European 9×19mm pistols 69/128"-25.4 LH: M14 1 mm Very common on European hunting rifles. Also used on some airsoft guns (although often in the left-hand ...

  3. Gauge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(firearms)

    Note: Use of this table for estimating bullet masses for historical large-bore rifles is limited, as this table assumes the use of round ball, rather than conical bullets; for example, a typical 4-bore rifle from circa 1880 used a 2,000-grain (4.57 oz; 129.60 g) bullet, or sometimes slightly heavier, rather than using a 4-ounce (110 g) round ...

  4. Taylor knock-out factor - Wikipedia

    en.wikipedia.org/wiki/Taylor_knock-out_factor

    These factors, along with Taylor’s dismissal of muzzle energy, allow many obsolete low powered large bore cartridges such as the .577/450 Martini-Henry and the .45-70 Government to have as much as twice the TKOF than the smaller bore general purpose hunting cartridges such as the .303 British and the .30-06 Springfield. For these reasons the ...

  5. Table of handgun and rifle cartridges - Wikipedia

    en.wikipedia.org/wiki/Table_of_handgun_and_rifle...

    Introduced by Remington at the 2023 SHOT Show. Straight-walled cartridge based on a blown-out .30-30 Winchester case and designed for deer hunting in U.S. states that require hunters with modern rifles to use that cartridge shape. [51].376 Steyr: 1999 [3] Austria & US 2 [54] R 9.5×60mm 2754 4211 0.375 60mm

  6. Rifleman's rule - Wikipedia

    en.wikipedia.org/wiki/Rifleman's_rule

    While there are many forms of rifle sight, they all permit the shooter to set the angle between the bore of the rifle and the line of sight (LOS) to the target. Figure 2 illustrates the relationship between the LOS and bore angle. Figure 2: Illustration of a Rifle Showing Line of Sight and Bore Angle.

  7. Overbore - Wikipedia

    en.wikipedia.org/wiki/Overbore

    The bore cross section areas "Q" used in the calculations were taken from the appropriate C.I.P. data sheets. The intermediate cartridges .30 Carbine , 7.92×33mm Kurz , 7.62×39mm , 7.62×45mm , 5.45×39mm , .223 Remington / 5.56×45mm NATO and 5.8×42mm stand out as having relatively low sub 8 O ratio's .

  8. Metallic silhouette shooting - Wikipedia

    en.wikipedia.org/wiki/Metallic_silhouette_shooting

    IMSSU Hunting Rifle Small Bore Also called smallbore hunting silhouette rifle. Identical to the description of the high power hunting silhouette rifle, except that the rifle may be a single-loading rifle, the weight may not exceed 3.9 kg (8.5 lb), the rifles are chambered for only factory loaded .22 caliber (5.6 mm) short, long or long rifle ...

  9. Bore axis - Wikipedia

    en.wikipedia.org/wiki/Bore_axis

    For example on an AR-type rifle, the mil-spec distance from center of bore to top of rail is 1.211 inches, or approximately 31 mm (1.2 in). The mount height itself, that is the distance from the top of rail to center of scope, varies, but typically lies around 36–38 mm (1.4–1.5 in) (higher and lower mounts are also readily available).