I called and talked to Hornady to see about availability and load data for the 6GT. They don't have any and they said midway is the best place to get them. The first shipment sold out in an hour.
My understanding is they make a 80gr 6mm bullet with the shape of a 105gr and the BC to match. So you get the BC of a heavy bullet and the higher velocity of an 80gr. Win-win
What did you end up going with @SDHNTR?
I'm looking at a 6GT just for fun/possibly get into PRS and think the .308BF is the easy button vs going with the 6ARC.
Also the new 80gr ELD-VT looks like an awesome match/varmint do all bullet out of either.