Thread: Resizing .308 brass to .243

Originally Posted by 257weatherby

Got started on this tonight, now have 20 Hornady .308 cased sized down to .243 - full length sized to 7mm08 first, then again in .243, didn't lose any cases and all chamber happy as, tomorrow I will measure neck thickness compared to standard .243 and load them with a full house load ready to form to the chamber - if all is happy, then I'll do the same to the 40 Norma cases in .308 I've got spare.

Do you do anything to mark the heads or don't bother?

Hey 257, please measure the neck diameter of a case with the 243 bullet seated? If you end up under 6.80mm you'll be ok to shoot them.

Cheers