270 has a flatter trajectory, 308 leaves a bigger hole. That's the only practical difference in the field so its up to you to decide which is more important to you.
i have a 270 took m
y biggest hog with it. from my closest shot to farthest shot. it's been pudding em down. lately been using & having great success with .223 cheep .55gr fmj, all close range shots. got a great deal on 55gr hps. they keep saying hogs will be back. i still waiting. some times me mind wonders, in my defence i go for weeks with out seeing people, some times months.
can't say bout the 308. give a
for the 270 here. my posts are cheep. best wishes