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  2. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    Very common on European hunting rifles. Also used on some airsoft guns (although often in the left-hand version). 71/128"-25.4 M15.88 1.058 mm Very common on American rifles chambered for the 7.62 caliber (for example .300 BLK, 7.62x39 mm, .308 Win) 5/8"-24 M18 1 mm Common on European rifles with bull barrels. 45/64"-25.4

  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. Rifleman's rule - Wikipedia

    en.wikipedia.org/wiki/Rifleman's_rule

    If the rifleman wishes to adjust his rifle to strike a target at a distance instead of along an incline, he needs to adjust the bore angle of his rifle so that the bullet will strike the target at . This requires adjusting the rifle to a horizontal zero distance setting of R Z e r o = R H cos ⁡ ( α ) {\displaystyle R_{Zero}=R_{H}\cos(\alpha )} .

  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. List of rifle cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_rifle_cartridges

    .17 PMC/Aguila.17 Hornady Mach 2.17 Hornady Magnum Rimfire.17 Winchester Super Magnum.22 BB Cap.22 CB Cap.22 Short.22 Long.22 Long Rifle.22 Extra Long

  7. 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).

  8. Freebore - Wikipedia

    en.wikipedia.org/wiki/Freebore

    Chamber illustration indicating the various sections of a typical rifle chamber. The freebore is the cyan colored section just ahead of the neck. In firearms, freebore (also free-bore, free bore, or throat) is the portion of the gun barrel between the chamber and the rifled section of the barrel bore. The freebore is located just forward of the ...

  9. 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 ...