Here's my load for 6.5 G - shoots sub MOA in 2 rifles (both Faxon barrels and both about .8 MOA for 5 shot groups with the occasional unicorn group of .4)
Hornady Brass
CCI 450
124 ELD-M
27.1gr XBR8208
I shot about 50 at 27.7-28.0 grains but as referenced earlier, pressure spikes are sneaky...