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|length= {{convert|1030|mm|ftin|abbr=on}} |part_length= {{convert|875|mm|ftin|0|abbr=on}} without gas generator

The German '''28 cm C/34 naval gun''' was a 283 mm 54.5-[[Caliber#Caliber as measurement of length|caliber]] [[built-up gun]] ...leship|4}}, which had an armored belt 225-283 mm, [[barbette]]s of 310-340 mm, at standard fighting distances.

|caliber=16 in (406 mm) ...e to its power it is regarded by many as one of the most effective [[naval artillery|battleship gun]]s ever designed.<ref>{{cite web

|caliber=460&nbsp;mm <!-- Artillery specifications -->

|caliber={{convert|5|in|mm|0}} |velocity=2,650 ft/s (808 m/s) full service charge<br />1,500 ft/s (460 m/s) reduced charge for defilade fire or illumination rounds

| caliber = {{convert|18|in|mm}} <!-- Artillery specifications -->

The '''Berezin B-20''' (Березин Б-20) was a [[20 mm caliber]] [[autocannon]] used by [[Soviet]] aircraft in [[World War II]]. ...ion|1944]] by chambering his [[Berezin UB]] 12.7 mm machine gun for the 20 mm rounds used by the [[ShVAK]] cannon. No other changes were made to the weap

|caliber= {{convert|9.2|in|mm|sigfig=4}} |part_length={{convert|460|in|m|sigfig=4}} bore (50 [[Caliber#Caliber_as_measurement_of_length|cal]])

*'''Caliber:''' 20 mm (0.8 in) *'''Muzzle velocity:''' 750 m/s (2,460 ft/s)

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

...Shpitalny-Vladimirov large-calibre for aircraft") was a [[20 mm caliber|20 mm]] [[autocannon]] used by the [[Soviet Union]] during [[World War II]]. It w ...liber round and serial production was launched. Some months later the 12.7-mm version has been removed from manufacture altogether.<ref>http://www.airpag

<!-- Artillery specifications --> The Type 91 [[torpedo]] had 450&nbsp;mm (17-3/4 in) diameter. There were five models of body design and five models