Your .270 kicks about 5 times harder than an AR-15...probably 30 times harder than a bazooka...
I also have deer hunted with a .270...My best was a lung shot at about 420 yards...
I have shot my uncle’s Mini 14. Maybe about the same as an AR15?
I have made some long shots. But my dad taught us boys how to stalk game so many shots were of shorter range. And he insisted that when we pulled the trigger we knew exactly where that bullet was going. And its effect.
What many people don’t realize is many big game hunters are highly proficient snipers.