Forgive America? Here we goI'm sure you meant to say "slightly different from you", but, like everyone else in the world I've learnt to forgive America for many things. Just to help you out, I apologise for not being as succinct as I should. When you order reamers for a particular cartridge, can get them in a set. This includes a roughing reamer, a finishing reamer and a die reamer. Some don't buy the latter. If you could not find any information on it I don't think I can help you any further. Its even the subject of an article on this very site. https://www.longrangehunting.com/threads/reaming-dies-with-chamber-reamer.234141/