A Yankee hill, with sub sonic rounds, it be as quiet as a BB gun. My 308 is that quiet. Sub sonic 308's with a 170 grain 30-30 bullet at 1100 fps. I think 11 grains Trail Boss powder, magnum primer. About like a 40 S&W round. I use it on coyotes, stray dogs, etc. Neighbors have no clue.
