I have been going through a similar exercise and was actually considering the 6.5 remington magnum, but where I live in Aust, we can't get dies, brass or the like. I have shot a 260Rem for sometime and have not found it wanting so would probably lean this way...in fact I have just ordered another barrel in this cartridge.
I figure if I can't stop a deer with a 120grain BT or 125 Partition, I need more gun and would step up to my 7mmRM. Having said that it seem like everything I point the 260 at seems to end up in the freezer. It is a great little round that hits out of all proportion to its size.
This is an excellent article if you are considering some of the smaller offerings.
http://demigodllc.com/articles/6.5-shootout-260-6.5x47-6.5-creedmoor/Good luck
LowBC
