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BL 16.25 inch Mk I naval gun United Kingdom: 1890s 450 mm (17.72 in) RML 17.72 inch gun United Kingdom: 1870s - 1900s 457 mm (18.0 in) BL 18 inch Mk I naval gun United Kingdom: World War I 457 mm (18.0 in) 18"/47 caliber Mark A gun United States: 1920 457 mm (18.0 in) 18"/48 caliber Mark 1 gun United States: World War II 460 mm (18.1 in)
These heavy guns were intended to be mounted in seacoast fortifications. 8-inch, 10-inch, 13-inch, 15-inch, and 20-inch bore (20, 25, 33, 38, and 51 cm) Rodman guns were produced. Other than size, the guns were all nearly identical in design, with a curving bottle shape, a large flat cascabels , and ratchets or sockets for the elevating mechanism.
Dahlgren smoothbore cannons, XX inch: Naval gun: 1864 United States: John A. Dahlgren: 4 made; never used in combat 508 M. 1864 20-inch Rodman gun: Naval gun: 1864 United States: Thomas Jackson Rodman 2 made; 2 survive 508 20 inch Perm Tsar Cannon/"Perm Giant" 1868 Russian Empire: Motovilikha manufacturing plant: 1 made; never used in combat; 1 ...
List of rifle cartridges, by primer type, ... .458×2-inch American.458 Express.458 HAM'R.458 Lott ... at 20:07 (UTC). Text is ...
At closer ranges (typically inside 15–20 meters), the shooter must compensate by aiming high to place shots where desired. The standard AR-15 rifle has a 500 mm (19.69-inch) sight radius. [15] The AR-15 uses an L-type flip, aperture rear sight and it is adjustable with two settings, 0 to 300 meters and 300 to 400 meters. [16]
The 20-pounder Parrott rifle, ... the rifled gun's 3.67-inch bore was narrower than the 12-pounder's 4.62 in (117 mm) bore and thus could fire fewer canister balls ...
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
Standard barrel lengths are 20" in the 10/22 Rifle, 18 1 ⁄ 2" in the 10/22 Carbine, and 16 1 ⁄ 8" in the 10/22 Compact Rifle which is also fitted with a shorter stock. All .22 Long Rifle versions use an aluminum receiver, while the discontinued .22 Magnum version used a steel receiver with integral scope bases.