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30x173
Another cartridge with a complicated history, this was developed by Oerlikon in the 1950/60s for their 304 RK aircraft revolver cannon, later renamed the KCA. This only saw service in some versions of the SAAB Viggen fighter, which is no longer in use, although it was also offered in the Hughes Model 34 gunpod. The KCA cartridge shown above is a drill round.
In the late 1960s the cartridge design was adopted for the American GAU-8/A 7-barrel rotary cannon, as fitted to the A-10 "tankbuster" plane and subsequently to the Goalkeeper naval CIWS. However, this differed from the KCA ammunition in three respects: the case material was changed from steel to light alloy, the priming from electric to percussion, and the driving bands from metal to plastic; as a result, the rounds are not interchangeable. Later still the GAU-8/A cartridge was adopted for the Mauser MK 30F cannon which is in wide use as an AA gun, and finally for the American Bushmaster II Chain Gun (renamed in its current, marinised, version as the MK44).
The most recent development by some manufacturers is a reversion to steel (but still percussion-primed) cases for the loadings specifically intended for AFV cannon, with the Mauser (now Rheinmetall) MK 30-2 being designed for these.
The 30x173 is now the most common Western cannon cartridge in this calibre, and is available in a wide variety of loadings, including APFSDS, from several different manufacturers. However, both the KCA and the latest AFV steel-cased rounds are hard for collectors to find, as is the GAU-8/A's notorious PGU-14/B API with a depleted uranium core (distinguished by a black and red projectile). Most cartridges available are of the alloy-cased TP type, with blue projectiles. The cartridge shown above is the Missile Piercing Discarding Sabot for use with the Goalkeeper CIWS.
Another cartridge with a complicated history, this was developed by Oerlikon in the 1950/60s for their 304 RK aircraft revolver cannon, later renamed the KCA. This only saw service in some versions of the SAAB Viggen fighter, which is no longer in use, although it was also offered in the Hughes Model 34 gunpod. The KCA cartridge shown above is a drill round.
In the late 1960s the cartridge design was adopted for the American GAU-8/A 7-barrel rotary cannon, as fitted to the A-10 "tankbuster" plane and subsequently to the Goalkeeper naval CIWS. However, this differed from the KCA ammunition in three respects: the case material was changed from steel to light alloy, the priming from electric to percussion, and the driving bands from metal to plastic; as a result, the rounds are not interchangeable. Later still the GAU-8/A cartridge was adopted for the Mauser MK 30F cannon which is in wide use as an AA gun, and finally for the American Bushmaster II Chain Gun (renamed in its current, marinised, version as the MK44).
The most recent development by some manufacturers is a reversion to steel (but still percussion-primed) cases for the loadings specifically intended for AFV cannon, with the Mauser (now Rheinmetall) MK 30-2 being designed for these.
The 30x173 is now the most common Western cannon cartridge in this calibre, and is available in a wide variety of loadings, including APFSDS, from several different manufacturers. However, both the KCA and the latest AFV steel-cased rounds are hard for collectors to find, as is the GAU-8/A's notorious PGU-14/B API with a depleted uranium core (distinguished by a black and red projectile). Most cartridges available are of the alloy-cased TP type, with blue projectiles. The cartridge shown above is the Missile Piercing Discarding Sabot for use with the Goalkeeper CIWS.
Jokia PKM neturi tokių galimybių oro gynybai, kad jas nereikėtų dengti oro gynybos sistemoms.
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