Thanks for the link.
Is it better to go up from 6mm Rem, or go down from 7x57?
Going up is usually easier less chance of a donut or any need to neck turn, but check anyway. It can be done in one pass. 7mm to 25 might need to go 6.5mm first depending on the brass.
I just got 6mm Win. brass from Natchez for 20% off, might want to watch and see if they do another discount.