Thread: 300 WM load development

Hi all.
Does multiple fired brass shoot/group less good than new brass??

I’m trying to get a load for my 300 WM. Im using multiple firings Norma brass. all have been fired out of this rifle.
rifle new to me, new hardy barrel 28” 1-9” twist.
I’m wanting to shoot 225gr ELDM.
I can’t get under 1” groups in my load development.
have tried charges from 65gr to 78gr where I got pressure. seating depths ladders and different primers. ado 2225 & adi 2217

I can get my 300wsm sub moa so shouldn’t just be my shooting ability I wouldn’t think.

Cheers