This past weekend had an opportunity to do some fairly extensive testing across several different charges of Retumbo (89grains to 91) as well as Remington and Nosler brass. Overall can't be more happy with this rifle as all loads tested shot .5moa or better at 200 yards.
It was intersting to note that with like charges of Retumbo the Nosler brass shot about 40fps faster than the Remington brass.
The load that stood out:
Powder Charge: 91grain Retumbo
Average Velocity: 3138
ES = 13
Accuracy = .299moa at 200 yards