Can anyone shed more light on the purpose of this projectile?
20mm Hispano, fired case, inert. Headstamp - 20MM 1941 plus three broad arrows
projectile is non-magnetic. There is a small hole in the projectile on one side just where the taper starts, about 1mm dia and blind, probably not more than 1mm deep
It could be a dingbat, but the hole shows that the projectile is jacketed, so the projectile even if not original for this round, must be a real one for something!
Any help appreciated