That's a nice deer! This thread's getting a bit too long, so I thought I could summarize some of the alternatives to the .270 and perhaps we leave it at that.

6.5 Creedmore - needs a bit more capacity to push those very long 140 grain projectiles a bit faster for hunting
6.5 PRC - better than the Creedmore, but really needs a long action, probably better to neck down to .257 and use 110-120 grain bullets in a short action
.270 Win - ideal cross sectional area, good trajectory and velocity, excellent sectional density and good b.c. especially with 140 grain bullets, mild recoil and muzzle blast , easy to shoot well, works best with 130 and 140 grain projectiles, kills superbly
.280 Rem - 140 grain bullet not as good as .277 140 grain bullet, doesn't push the 150 grain bullet fast enough
.280 Improved - a little better than .280, RCBS version may sometimes feed better than Ackley version
.284 Win - heavier bullets eat into powder capacity when used in short action, rebated rim
7mm Rem Mag - slightly better performance than .270 on larger game at the cost of more recoil, muzzle blast, less magazine capacity
.30-06 - excellent for larger game especially with 180 grain bullets, not as mild to shoot as .270, harder to shoot as accurately as the .270 at longer distances