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Muzzle-loading guns (as opposed to muzzle-loading mortars and howitzers) are an early type of artillery, (often field artillery, but naval artillery and siege artillery were other types of muzzleloading artillery), used before, and even for some time after, breech-loading cannon became common.
The muzzle-loading design and weight of the iron placed design constraints on the length and size of naval guns. Muzzle-loading required the cannon to be positioned within the hull of the ship for loading. The hull width, guns lining both sides, and hatchways in the centre of the deck also limited the room available.
The muzzle-loading design and weight of the iron placed design constraints on the length and size of naval guns. Muzzle loading required the cannon muzzle to be positioned within the hull of the ship for loading. The hull is only so wide, with guns on both sides, and hatchways in the centre of the deck also limit the room available.
The gun was constructed of a toughened mild steel inner "A" tube surrounded by multiple wrought-iron coils, breech-piece and a jacket. Rifling was of the "polygroove plain section" type, with 33 grooves increasing from 0 to 1 turn in 50 calibres (i.e. 1 turn in 800 in (2,000 cm)) at the muzzle.
The gun was produced at a time when new rifled and breech loading guns were beginning to make their mark on artillery. At first the 68-pounder's reliability and power meant that it was retained even on new warships such as HMS Warrior, but eventually new rifled muzzle loaders made all smoothbore muzzle-loading guns obsolete. However, the large ...
The gun originated from a desire for a longer 12 in (30 cm) gun than the existing RML 12-inch 35-ton gun.Experiments in 1874 with both 12 in (30 cm) and 12.5 in (32 cm) versions 3 ft (91 cm) longer than the existing 12 in (30 cm) gun showed the 12.5 in (32 cm) calibre was more suitable, and further experiments showed a projectile of 800 lb (360 kg) could be fired with a charge of 130 lb (59 kg ...
A rifled muzzle loader in the forecastle of HMS Gannet (1878). A rifled muzzle loader (RML) is a type of large artillery piece invented in the mid-19th century. In contrast to smooth bore cannon which preceded it, the rifling of the gun barrel allowed much greater accuracy and penetration as the spin induced to the shell gave it directional stability.
The RML 9-pounder 8 cwt gun and the RML 9-pounder 6 cwt gun were British Rifled, Muzzle Loading (RML) field, horse and naval artillery guns manufactured in England in the 19th century. They fired a projectile weighing approximately 9 pounds (4.1 kg). "8 cwt" and "6 cwt" refers to the weight of the gun to differentiate it from other 9-pounder guns.