Never had the urge to shoot 60’s, but 40-55 Nosler, Sierra and Speer have all performed very well. As far as powders AA2700 is the primary choice. Excellent fill ratio, good velocity and accuracy. Burns a little cooler so it’s easier on the throat plus not as temperamental on warmer days. That said have also had good luck with
H380
H4895
Varget (although poochy in velocity)
4064
Benchmark
Good luck.
