I have burnt out (1) 308 barrel, (1) 6x47, and (2) 6.5 creeds on my 2017 AT. It is indeed buttery smooth, and the bolt lift is shockingly light. It’s when lighter if you grease the cam areas where the cocking piece meets the bolt body.
My AT-X is heavier but only by maybe 1-2lbs at most. It’s...