This particular 20mm casing was manufactured in Raleigh Cycle Co., Ltd., Nottingham, England, UK The “OeZ” marking means “Oerlikon, Loaded with Nitrocellulose powder”. This marking was used to differentiate the semi-rimmed Oerlikon rounds from the similar looking (but not interchangeable) 20m Hispano. In British service, a “Z” stamped on the base of a case 20mm or below in caliber indicates that the case is loaded with nitrocellulose flake powder. This is opposed to the typical British Cordite “spaghetti” rod-type propellant.
WW2 1942 British Dated 20mm Oerlikon Ammunition Shell Casing in Ammunition
Oerlikon 20 mm cannon - Wikipedia
WORLD WAR TWO BRITISH 20MM OERLIKON CANNON ROUND,1943
Search 307 Ammunition for Sale in Manchester- Gunstar
Search 307 Ammunition for Sale in Manchester- Gunstar
WW2 1942 British Dated 20mm Oerlikon Ammunition Shell Casing
Canadian alloy cases - General Ammunition Discussion - International Ammunition Association Web Forum
Oerlikon 20 mm cannon - Wikipedia
20 mm hi-res stock photography and images - Alamy
WW2 1942 US Dated 20mm Ammunition Shell Casing in Ammunition
20 mm cannon hi-res stock photography and images - Alamy
