Instead, the Air Force provided the smaller 20mm M61 Vulcan cannon that was in widespread ... the A-10 with the Oerlikon 3-0-4-R-K 30mm revolver cannon, however it had a much lower rate of fire ...
During a training exercise involving two F-16's over the island of Vlieland on Jan. 21, one pilot opened fire with the Vulcan cannon and found "at least one fired cartridge caused damage" to the ...