"Original brass" such as Kynoch will probably have Berdan primer flash holes and is not straight forward to reload. Can be done, I've done it, but getting the old primers out and finding the right size replacement is the issue. A lot easier to use 8x57 Mauser and modify them. If you order FL dies from CH, they make a good product at a fair price but be sue to say it's for an 8x56 Mannlicher-Schoenauer, not an 8x56 Mannlicher. They're 2 different cartridges, the latter is a military design.