23 mm caliber is a specific size of popular autocannon ammunition.
This ammunition size has been widely used in many conflicts worldwide. Examples of armaments using it are: 23×115mm caliber, used on many Soviet and Russian airplanes 23×122mm 23×139mmSR 23×152mmB caliber, used on Ilyushin Il-2 attack plane as well as on later Soviet anti-aircraft guns 23×260mm caliber, telescoped ammunition used on the Rikhter R-23 autocannonhttps://disk.yandex.com/a/03L473AK3VQkLK/5aeeab7966c8a637d96aa450
Cartridges (incomplete list) Dimensions Name Date Bullet diameter Case length Rim Base Shoulder Neck Cartridge length 23×152mmB 24.1×70mm .950 JDJ 24.13mm (.950 in) 70mm (2.75 in) 29mm (1.14in) 29mm (1.14 in) 29mm (1.14 in) 26mm (1.023 in) 101.6 mm (4.00 in)
See also 12.7×99mm 12.7×108mm 14.5x114 20 mm caliber 25×137mm 40 mm grenade Bofors 40 mm gun List of cartridges (weaponry), pistol and rifle
References