I'm sorry if this offends you as well, but if there 1/2 inch blocks,
4 blocks would be an inch square and that group is NOT in a 1 inch square?

and as for hunting its more than acceptable in accuracy,, so NO bash here on saying other wise,
BUT< in all honestly, that is far from an amazing group from a .308 rifle(and NOT all .308 rifles like any load or bullet, they can ALL be different in how they Like or dislike something)

and honestly, most ALL of my .308's will shoot almost 1 hole groups(size of a quarter more or less) with loads they like and if I do my part at a 100 yards and in a locked in rest!
Sub MOA rifles are NOT that un common at a 100 yards these days from, factory rifles and factory ammo!
again, there NOT needed for hunting deer at normal ranges, but just saying,
a group like what your showing , isn't all that super if were being honest here!