At 450 yards I think either will work fine. With good bullets and good bullet placement I dont see a HUGE difference.
I have a personal place for a 30-06, though also I'm not the kind of guy shooting at elk at 450 most times. I did a hunt on the OPEN prairies this year.....not a shrub/tree/bush on the entire area I hunted. This is an honest statement, its the most open country a guy could hunt. Ended up shooting my bull at 328 yards and was lucky......
