Both
@Cheesehead &
@ThreeJacks mentioned that they would have liked to have seen it in 7x64 Brenneke. Just as an FYI, a Ruger MkII in that chambering popped up on GunsInternational today. It's not a rifle I see very often. As expected, the asking price reflects that.
Ruger M77 7 X 64 Brenneke for sale online.
www.gunsinternational.com
As a southpaw shooter, Ruger has only seen fit to build the African models in 375 Ruger for me. But I already have two 375 H&H rifles (LH Winchester 70 & an 1885) so that chambering doesn't have a lot of appeal. I got a Ruger No. 1 RSI in 275 Rigby because I got tired of dreaming about a LH African in that caliber (not a bad compromise since I love that rifle).