Wall gun

Essentially, it was a scaled-up version of the army's standard infantry musket, operating under the same principles, but with a bore of up to one-inch (25.4 mm) calibre.

This sort of weapon may also be found described as a rampart gun, hackbut or amusette, a name originally given to early medieval hand cannon.

[2] They were equipped with a yoke at the point of balance, which tapered into a pivot, which could be inserted into several sockets along the walls, which would absorb the recoil of the piece and also provide a stable gun platform.

Tests showed that they were capable of hitting a sheet of common writing paper at 600 yards (550 m), but as this is comparable angular precision to that of a modern full-bore target rifle these results may be optimistic.

Bolt action wall guns firing metallic cartridges were used in India and China in the late 19th century.

[8] It fired iron bullets 1.25 inches (3.18 cm) in diameter and was classified as a form of wall gun either by design or use.