i shoot head shots::Just means i have more room for powder if i have a action and barrel that can shoot a smaller bullet faster i shoot head shots

i shoot head shots::Just means i have more room for powder if i have a action and barrel that can shoot a smaller bullet faster.
What do you want to do with the gun is important.
And of the guns listed my only question is how far away do you want to shoot the deer.
If you have everything you need to effectively place shots then on deer put a lot of crank in your scope to fire the 308.
It is a classic long range gun but that was the big gun when that all started.
So far from the best out there now.
Outside of that you best have a turret and range finder.
The 270 gives you more range in a still comfortable to shoot rifle.
Still depends on how far but i have shot deer furthe with mine but it is pretty comfortable to 400 yards.
And if you are looking at the 300 win mag.
Then you might as well go to the 300 ultra mag.
They are only fun to shoot for the first few rounds.
As a deer rifle they are both over kill on 200 yard or less shots.
The problem most run into is they have trouble even effectively sighting them in.
Most are scared of the hit they are gonna give you.
But if you have the money for it you can make a long range 50 cal shoot able.
The fact that you would ask the question leads me to say take the 270.
Not the biggest hammer but it will do it all.
Good luck with your choice.