We won't be shooting past 300 yards and prefer under 200 for every thing, especially moose and bear.
The 7x57 and 7mm-08 140's might start out a little faster than 140's from the Creedmoor, let's say 2900 for the 7mm's versus 2750 for the Creedmoor. But at 400 yards a 6.5 Partition would be within 50 fps of the 7mm 140
Are the OP's grandkids shooting elk at 400 yards? I remember, not too long ago, a gun writer stating that something like 90% of the game he killed was under 300 yards.
That's my issue with the Creed-Craz. Now everyone is a 400+ yard shot. I see that at the local range and gun shops. The same dumb-arses that couldn't hit their deer at 100 yards with their -06 are now "ready" for 800 yards with their new 6.5!
I certainly get the lower recoil appeal, though.
