It's a very old round from around 1900 and was factory loaded. It's a good round, IMO, and it's appropriate to the 95 & 96 Mausers. H4895 and IMR 30-31 are both good powders for it. The traditional bullet is the 286gr RN. As the poster says, it's a thumper.
Thnx Guys. I honestly don’t remember if I’ve heard of that round and if I did I probably didn’t know what it was.