Thanks so much for the info. It's something that I've never come across before. It has a mark 3 head. So it fits ..........thanks eversoThe NRA is an overstamp, over the mark designation, in this case looks like a mark VI .303. Therefore the '/' in 'N/RA' is actually part of the underlying VI stamp. These were supplied as club ammunition to the National Rifle Association, up to the First World War.
What do you mean by "a mark 3 head"?Thanks so much for the info. It's something that I've never come across before. It has a mark 3 head. So it fits ..........thanks everso