All my good loads for my bolt action rifle are under max and have used Winchester, LC, GFL, and PMC cases with no difference.
The new brass has allot of PMC brass with crimped primers. Took me about 6 hours to do 400 cases sized, trimmed, chamfered, and then reaming the pockets. I'm looking at varmint AR uppers and everyone chambers for something different.
Stag 6h = 5.56
RRA Varmint = .223 Wylde
DPMS = .223 Remington