Inherited this shell casing from my grandfather who emigrated from England around war time (WW2) but I don't have any real information or dates. My mother just remembers it always being around. My only amateur google sleuthing has figured out its from England and has been re-fired. Thanks for any help!
Length - 200mm
Diameter of casing at top - 85mm
Diameter of casing at bottom above lip - approx 93mm-95mm
Lip Diameter - 103-105mm (I measure it at 103-104 wondering if it's just lost a 1mm)