James ,to bad energy doesnt kill. You can post energy till your fingers hurt from typing. Thats not what does the job.
yesI showed a weak load in the -06 just to show how the 2 compare.
your best load in the -06 just reaches 2000 fps at 500 yds , which would beadequate for expansion.
Without the velocity your bullet aint gonna do nothing but pierce a small hole, and that size of hole determines how well a gun kills, has nothing to do with energy. .243 has what it takes to kill well past 400 yds, if you do your part.
Why do you think magnums are great long range cartridges ? Velocity baby ! Velocity.