Re: 30-06 Ackley, 215 Berger Hybrids and Retumbo
RL22, H4831sc, H4350, H1000 (though this is pretty slow), Ramshot Magnum, Ramshot Big Game
The short cut is the best temp stable solution here. RL22 is probably the best max velocity but it's pretty temp sensitive.
Retumbo is very very slow for what you're looking to do.