As I recall, the max charges of blue dot will overflow the case moth on the various .308 based rounds. I never would have believed the accuracy of the blue dot loads if I hadn't tried them myself.
DO NOT TRY THIS!
As a rule of thumb maximum Blue Dot loads in .308 based cases are about 60% of case capacity.
Maximum Blue Dot loads in -06 and x57 cases are about 50% of case capacity.
GE
I think he was trying to say that if you DOUBLE charge the maximum Blue Dot loads in the .308 based cases you will overflow the case mouth, which is true. NEVER fill a bottle-neck case with Blue Dot, seat a bullet, and shoot it, you are asking for some serious troubles...
Selmer