04-07-2021, 03:06 PM
(04-07-2021, 02:02 PM)41bear Wrote: I've got 100 Lapua 762x39 cases, bought a few years ago, that I'm thinking about converting to 6MM ARC. Just fire form them to 65 Grendel and run thru the ARC die. It's a process but with ammo being HIGH anything that gets me closer to shooting my new build is worth the effort.
Just run them strait down to 6 ARC. I have a bunch of Starline x39 cases that have 7-8 firings in them that I took down to 243 LBC (ie, 6 Grendel). You'll probably put more stress on the body / shoulder junction and neck if you fire and then bump / neck down again. Cracks forming in the former were the main reason why I've tossed the ones I've tossed, followed by a couple of necks splitting while seating.