I think the Garrett 44 Mag loads are the best out there, followed by the Buffalo Bore, and Corbon loads.
However Randy Garrett told me himself, IF you cannot get any of MY loads for a particular trip, get some Federal 300gr Cast Core loads.
He said they are pretty good loads. They do not penetrate quite a deep as his loads but they are usually available locally.
IMHO the 300gr Federal load kicks less, well "hurts less" in a 4" Mountian gun or a 329 PD, than the factory 240gr loads from Winchester, Remington or Federal.