Dave, thanks for the details. I've always liked the 300 SAUM case, though I've never owned one. For a true SA it makes far more sense than the 300 WSM, and I like the SAUM case design slightly better than the WSM case (30* vs 35* shoulder). I've also heard that same problem with Hunter and cold temps. Have you tried H4350 instead?
To the 30-06 Ai, I suppose it makes some sense if a guy has an existing 30-06 and a corresponding itch. However, I find "30-06" and "improved" in the same sentence to verge on blasphemy.
Something that balanced needs no improvement IMHO.
I also wonder whether the extra 5* shoulder on the 30-06 Ai really inhibits case stretch more than the 35* shoulder on the 300 WSM. I guess I'd sooner run the 300 WSM throttled back to 30-06 Ai speeds and get longer brass life. That's just the way I look at it, but I also have no need for anything Ai so that's my bias... though I think the 223 Ai makes the most sense of all of them.
