The .297/230 Morris Short and .297/230 Morris Long are both rimmed bottlenecked centrefire miniature rifle and pistol cartridges.
.297/230 Morris Short
The .297/230 Morris Short fired a 37 gr (2.4 g) lead projectile driven by 3.25 gr (0.211 g) of black powder at 875 ft/s (267 m/s).
.297/230 Morris Long
The .297/230 Morris Long fired a 37 gr lead projectile driven by 5.5 gr (0.36 g) of black powder at 1,200 ft/s (370 m/s).
The .297/230 Morris cartridges were produced for use in the Morris Aiming Tube, a commercial sub-calibre barrel inserted into the barrel of a large bore rifle or pistol for training or short range target practice. The Morris Aiming Tube worked well enough for it to be adopted for service in August 1883 by both the British Army and the Royal Navy for use in the Martini-Henry rifle.
The Morris Aiming Tube was later adapted for use in the .303 British Martini-Metford rifle, the Lee–Metford rifle in 1891 and the Webley Revolver, with both the .297/230 Morris Short and the .297/230 Morris Long being fired through the tubes. In the Lee-Metford rifle, the Morris Tube and the .297/230 cartridge were not particularly accurate and were replaced after 1908 by a new .22 in (5.6 mm) tube firing the rimfire .22 Long Rifle cartridge which was more accurate, quieter and much cheaper.