308 Norma Mag

Sounds like you want something different, just to be different.
That's okay.

However, a 30" 300 Win will sling a 215 Hybrid over 3000fps with ease.
I run mine at 2960 and it's easy on brass. DISCLAIMER: I have the longer freebore match chamber from Northland.

I've wanted to try some 230, 245 and 250gr, but I really don't see why I should bother. (I probably will anyway)
A buddy shoots his 245 hybrids out of a 300 Norma Mag at 2850-ish.
Our dope is nearly identical out to 2k.