.3 grains isn't enough... more like 2 or 3 grains ejector marks don't start 'till you are over 70K... usually 75 or so will give you a good one with heavy bolt6.5 Creedmoor
IMR 4451 42.0 grains
143 grain ELD-X
.3 MOA accuracy
Stiff bolt lift and light ejector Mark Tikka T3x
.015 off lands
Should I drop down .3 grains to 41.7 grains?