reloader 22 at 75gr. with 165gr horndy bt works great for me with 3/4 inch group
I shot a max load of 76grs of R-22 behind several 180s in my 300Winnie. So you might could go a grain or 3 more. Also 74grs of R-19.
You should be able to get them things runnin' pretty fast pretty easy...find one that's accurate and go!