The 350 Rem has almost identical internal volume as a 30-06. With a 35 caliber bore the expansion ratio is very generous.
Trust H4895 all the way down to 60% in this cartridge. It will treat you right.
The older Speer manuals listed many reduced loads for rifle cartridges using IMR 4198, or SR 4759.
I am 4 hrs from my load books right now, but can tell what my Speer says when I get home this pm if you are interested.
