ORIGINAL: stubblejumper
I have only tries 165gr and 180gr bullets and r-25,h-1000 and imr7828 all provided good results with r-25 being the best in my rifles.In my opinion either imr4350 or h4350 would be too fast for such a large case.
That is kind of what I thought. I saw one person on reloadersnest.com using Rx19, and I kind of thought that might have been fast. Alliant's website recommends Rx22. I will see how it goes.