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|caption=Aft 283 mm dual turret on [[Coastal defence ship]] Gustav V |caliber={{convert|283|mm|in}}

|part_length={{Convert|35.48|in|mm}}<ref name=TBG1887/> |caliber={{convert|1|in|mm|sing=on|sigfig=4}}

| vehicle_range=400 km | armour=12–38 mm [[aluminium]]

| caliber = {{Convert|23|mm|0|abbr=on}} ...lkov-Yartsev VYa-23''' (Волков-Ярцев ВЯ-23) is a {{Convert|23|mm|abbr=on}} [[autocannon]] used on [[Soviet]] aircraft during [[World War II]

|type=Naval Artillery |caliber= {{convert|16|in|mm|sing=on}}

<!-- Artillery specifications --> ...g at maximum elevation. These guns had a useful life expectancy of 320 to 400 EFC.<ref name="Campbell"/> These guns and the type E twin turret with 70 d

|caption=A Flak 38 105 mm anti-aircraft gun at a Military museum in Belgrade |cartridge=105 × 769 mm. R

...ola 2.jpg|thumb|right|300px|Detailed view of a BMP-1 turret showing the 73 mm gun tube of the 2A28]] The 2A28 is a 73&nbsp;mm low pressure smoothbore semi-automatic gun with wedge breechblock. The gun

|cartridge=[[20 x 138B cartridge|20 × 138 mm. B]] |caliber=20 mm (.79 in)

The '''Shipunov 2A42''' is a [[Soviet Union|Soviet]]/[[Russia]]n 30&nbsp;mm [[automatic cannon]]. It is built by the Tulamashzavod Joint Stock Company. ...ent projects from various manufacturers. The design bureau for the 30&nbsp;mm 2A42 cannon is the KBP Instrument Design Bureau.

...5&nbsp;inches (127&nbsp;mm) in diameter, and the barrel was 25 [[Caliber (artillery)|caliber]]s long (that is, for a 5" bore and a barrel length of 25 calibers ...g) projectile a velocity of 2100 feet per second (640 m/s). Ceiling was 27,400 feet (8352 meters) at the maximum elevation of 85 degrees. Useful life exp

|caliber={{convert|13.5|in|mm|sigfig=4|sing=on}} ...calibre]] was 13.5 inches (343&nbsp;mm) and the barrels were 45 [[Caliber (artillery)|calibre]]s long i.e. 607.5 inches (15.43 m). The guns were greatly superio

|caliber=16&nbsp;inch (406&nbsp;mm) <!-- Artillery specifications -->

...40 mm grenade]]s in both the low velocity 40x46 mm and high velocity 40x53 mm calibers which uses what it calls [[High-Low System|High-Low Propulsion Sys HE grenades may well be the standard for both types of 40 mm grenades, but over the years the functions of the weapons using these grena

|part_length=400 inches (10 meters)<ref name="Campbell"/> |caliber={{convert|8|in|mm|sing=on|sigfig=3}}<ref name="Campbell"/>

|cartridge= 84×246 mm. R |caliber= 84 mm. (3.31 inches)

|width=10 in (256 mm) |height=11.5 in (292 mm)

|cartridge= 30 × 173 mm |caliber= [[30 mm caliber]]

...ghting troops of industrialized nations, Gatling guns could be targeted by artillery they could not reach and their crews could be targeted by [[sniper]]s they ...st War|Mahdists]].<ref name="proceedings"/> Imperial [[Russia]] purchased 400 Gatling guns and used them against [[Turkmen people|Turmen]] cavalry and ot

|length=1387 mm (GSh-23)<br/> 1537 mm (GSh-23L) |part_length=1000 mm

|caliber=20 mm <!-- Artillery specifications -->

...a Japanese [[autocannon]] used during World War II. It was a [[Type 97 20 mm anti-tank rifle]] adopted for use in bomber turrets. *'''Caliber:''' 20&nbsp;mm (0.8&nbsp;in)

*'''Caliber:''' 37&nbsp;mm (1.45&nbsp;in) *'''Rate of fire:''' 400 rounds/min

|range= {{convert|400|yd|m|0}} to {{convert|1000|yd|m|0}} <!-- Artillery specifications -->

|length= {{mm to in|1650|abbr=on|precision=1|wiki=yes}} |part_length= {{convert|1143|mm|abbr=on|1}}

|length= {{convert|71.93|in|mm|abbr=on}} |cartridge= 20 × 102 mm.

|cartridge= 15 x 96 mm cartridge |caliber= 15 mm

|cartridge= 20 x 80 mm |caliber= 20 mm

|caliber= 30 mm (1.18 in) ...s quite powerful, but with a relatively low initial velocity, while the 37 mm was lacking in rate of fire and ammunition reserve.

The '''N-37''' was a powerful, 37&nbsp;mm (1.46&nbsp;in) [[aircraft]] [[Autocannon|cannon]] used by the [[Soviet Unio ...Its muzzle velocity was still considerable, but its rate of fire was only 400 rounds per minute. The weapon's considerable [[recoil]] and waste gases wer

|name=Oerlikon 20 mm cannon |caliber=20 mm

|name=Otobreda 76 mm |part_length=62 caliber: {{convert|4724.4|mm|in|abbr=on|lk=on}}

| caliber = 20 mm ...iulian |url=http://www.navweaps.com/Weapons/WNUS_Phalanx.htm |title=USA 20 mm Phalanx Close-in Weapon System (CIWS) |publisher=Navweaps.com |date= |acces

|part_length={{convert|43.5|in|mm|sigfig=4}} (bore) |caliber= {{convert|37|mm|in|sigfig=4|sing=on}}

|caliber= 40 mm (1.575 in) |velocity= 732 m/s, (2,400 ft/s)new gun<ref>Naval Weapons of WW2, Campbell, p71</ref>

...[Caliber#Caliber_as_measurement_of_length|cal]])<br>Total {{convert|140|in|mm|sing=on}}<ref name=Hogg&Thurston1972page79/> |caliber=3 inch (76 mm)

|cartridge={{convert|400|to|410|lb|kg|sigfig=4}} [[Palliser shot|Palliser]], [[British ordnance term |caliber={{convert|10|in|mm|sing=on|sigfig=4}}

'''Sea Zenith''' is an advanced four-[[gun barrel|barrel]]led 25&nbsp;mm [[CIWS]] used by the [[Turkish Navy]]. It is mounted in an enclosed automat 1. Caliber[mm] : 25<br>

...ry armament, by the end of the war, with RPC first appearing on Vickers 40 mm (Pom Pom) 4 and 8 barrel mounts in late 1941.</ref> ...t could compute firing solutions for targets moving at up to 320 knots, or 400 knots in a dive. Its installations started in the late 1930s on destroyers,

|weight= 2,450 kg (5,400 lbs) |caliber=75 mm

...]] used during [[World War II]]. It was a scaled-up version of the 20&nbsp;mm [[Oerlikon FF]] cannon. *'''Caliber:''' 30&nbsp;mm (1.2&nbsp;in)

...(arms)|advanced primer ignition blowback]] mechanism pioneered by the [[20 mm Becker|Becker]] cannon, but fired different ammunition: 20x72RB, 20x100RB a ...igō Kizyū, Kanji: 九九式二号機銃) The Japanese Navy classified 20-mm weapons as machine guns rather than cannon.<ref name="Mikesh"/> These weapo