Unless you're striving for BR accuracy, then I'd load 64 gr. of RL22, sight in, and go kill whatever you shoot at.
Exactly what I was thinking. However, with the 64 gr. charge you could experiment with seating depth and see what the groups do. I'm not a hotrodder but seek the best accuracy and it seems like your 64 gr. load is the most promising of the bunch. Good luck with it.
