There is not one bit of "practical" differnce in the field as far as trajectory and killing power in any of the calibers you list, pick the rifle that feels best to you..
To state that anyone of these calibers is "better" than the other under field conditions is just wrong IMO..From roughly 25-06 to 7 Mag. and all in between is about the same..Perhaps a noticable difference shows up with the big 30 calibers but still not as much as some seem to think..the real difference comes with the .338 and up..but with proper bullet placement even this advantage will shrink. Proper bullets are mor important than caliber by a long shot.
The bottom line is a heart shot elk/deer is just that..The difference comes when the shot is a tad off center and I mean a tad, that's not much. Also, going away shots where the extra penetration really pays off bigtime makes the bigger calibers more desirable, and is always a consideration with me, otherwise I would use the 30-06 and nothing more.
The above is only my personal opinnion..
