Take a look at the Sierra 65gr Gameking, should work in the 8 twist on that rifle.
I've only tried TAC with those but Varget should work. Sierra might have data, Hodgdon doesn't list a 65gr bullet in their online data.
If you're going to load a bunch, the ball powders (TAC, CFE223, ...) might be a better choice than extruded powders?
I use a Lee Perfect Powder Measure to drop TAC and it's very accurate.
I also lightly crimp my loads with a Lee Factory Crimp Die. Started this for Lever Gun reloads and the practice has carried over to about everything else.
Hope this helps.
