I recently picked up a 458 Winchester magnum (ruger M77 Mark I tang safety)and picked up some barnes 350gr tsx bullets for it. I looked through a few manuals am leaning towards H4198 or maybe even H Benchmark (I also have both of those on hand). Anyone have any min, max loads, and oal’s to get me in the ballpark? This will be my first time loading for a big bore rifle. Any info will be greatly appreciated.
