158gr LSWC's over 6.4grs of Unique in magnum brass is my every day load. I clocked it but can't remember the speed. 1100-1200fps I think.

A gun writer. Mike Venturino IIRC wrote up a 38-44 load as the same type bullet over 11+grs of 2400 in spl cases. Again IIRC. At any rate I tried it. It worked fine, but I think I like that powder better for heavy loads.

I've not yet tried heavy bullets like 175grs or more. I pack a bigger gun or put more heat behind the 158's if I expect a need. Someday I'll try something heavier.