Steve, I might be the poster implying that you were lying..
This was not my intention, but instead to flag a dangerously erroneous load posted for all readers. My direct implication is that I do not believe your numbers. That you are mistaken. I've been too busy to assemble a postible QL shot for you. I'll try here.
I drew a 6.5x47L improved with a 35deg shoulder via moving shoulder up(to provide higher capacity from the case) in 'Cartridge Designer'. This indicated ~51grH20 capacity.
Then I run your numbers in QL with a similar case set at 51grH20. I assumed bullets touching lands to get highest velocity from the load, and seated a 140gr BT bullet for your COAL.
I get ~2850, at very high pressures. I could calibrate any notion but pressures would continue to climb before a match to your results could be reached.
I'm aware that overpressure loads are the latest trend to smaller grouping. But this is not beneficial to hunting, and would serve only to overun the reloading board with oversizing problems(like it isn't already)..