Does anybody have any thoughts on this cartridge?
Ray Meketa posted an image of a similar looking round on the forum some years ago and my initial thought was that this was one of the loads utilised in the development of the 47mm caselength .30 Light Rifle - which was of course based on the commercial .300 Savage.
I also initially thought that this cartridge case might be made of aluminium however it’s almost certainly tinned brass.
I have sent photos to Ray & Bill Woodin and both quickly pointed out that the shoulder angle is wrong for the Savage and is more akin to the 7.62 x 51mm. A .300 Savage has a caselength of 47mm but this cartridge has a caselength of 48mm.
The bullet is non-magnetic, GM lead-cored, boat-tailed and weighs 144gn. It’s either a British L2A2 or, more likely, a Belgian SS77.
I’ve found some references in old catalogues that mention a series of at least three Belgian experimental ‘7.62mm Short Case/Light Rifle rounds’ all derived from the .300 Savage - none of them exactly match this cartridge but they all resemble it so closely I suspect that this is a experimental from that era. Any suggestions?
This shows the cartridge between a (left) .300 Savage and (right) a 7.62 x 51mm NATO.