i prefer loading the 300 brass too. i ripped the necks off several 223 cases during the process. granted my brass was of unknown age and random origin. my hunting bud has loaded over 2,000 and only split a few necks. we both used the 300 hamr die to open case in one step. all my experienced handloading buds told me that was nutts and i should go 6mm, 7mm and then 30 cal. that's more time than i will spend loading ammo. heck i don't even like loading ammo.

fortunately my bud does and he made 500 rounds for me at the beginning of december. i already went through them and 150 more this week. i think wilson's bullet to kill ratio is a little better than mine, lol