Re: 300 Win Brass?
I use CCI BR2's with win brass using 79.5 gr of h1000 under a 208 gr Amax. I think Fed Match 215's might be a better choice especially with the 230 OTM. Most people get to about 2750 or so FPS with the 230 OTM and amazing accuracy. At that speed the 230 OTM has plenty of steam past 1500 yards.
I will switch the 208 gr amax to my 308 and switch to the 230 OTM for my win mag.
"Let glorious acts more glorious acts inspire,
And catch from breast to breast the noble fire!
On valour's side the odds of combat lie,
The brave live glorious, or lamented die;" - Iliad, Book V