Annealing 6.5 Grendel Brass

[centerfire]

So would you anneal new brass or just after once firing it?

Prior to the first time you load the brass; Brand new or once fired if it is brass from loaded factory ammo. Treat it all like it is once fired LC milspec. Anneal, turn if needed, size, trim, chamfer, etc. The amount of BS I've dealt with lately from the Peterson and Lapua is ridiculous; just start from zero and assume none of it is right...because it probably isn't.