Hi guys. I'm hoping to get some feedback from you regarding Unique powder loads in large rifle calibres please. I'm looking specifically at the .416 Rigby, but experience with other rounds would also be helpful.
So far I've found .50BMG - 15gr, .460 Weatherby - 20gr, .338 Win Mag - 17gr. I've been loading 13gr in my .45-70 for a while since you guys encouraged me to try it, it works very well. I'll be using an RCBS 416-350-FN in the Rigby and am thinking of starting at around 15gr. What do you think?