30 mm caliber | 25 mm caliber | Powder chamber of a ''Veuglaire'', caliber 130 mm, length 1.07 m, wrought iron, early 15th century, La Fère | Caliber Comics | 5"/54 caliber Mark 45 gun | 20 mm caliber |
Rimless cartridge, is an approximately 7mm bullet diameter rifle round developed in Canada by F.W. Jones as a consultant to Sir Charles Ross, 9th Baronet, and his Ross Rifle Company of Quebec, Canada for use as a Canadian military cartridge as a replacement for the .303
3 × 7.62 mm (0.30 in) rear-firing ShKAS machine guns (later replaced by 12.7 mm (0.50 in) Berezin UB machine guns) in the canopy, dorsal and ventral hatches.