A fellow member sent me some 457122’s to try out. Cast from range scrap, they’re pretty soft, and a little skinny for my Marlin. He recommended patching them to size, which I did to a few today.
Notebook paper, wrapped twice, smeared a little case lube around the driving band, and ran them through my .460 sizer.
Loaded them over 44gr IMR 3031, which is my “go to” load for a 350gr.