none of these are better than 308 win period.
none are valid accurate 1000 yard rounds tho 308 is shot at 1000.( loooong bbls like 30-34")
while longer shots have been made, the mil considers the 308 with a 175 an 800 yard round and super sonic to 1000.
to be realistic at 1000 you need a bigger 300 wsm or smaller case, 6 bra or 6 dasher( 308 bolt face).
(i shoot long range paper,600.1000, 2000....i have never seen a 6.5 creedless at a match)
you can read about my latest 308 win in the build forum

Quote Originally Posted by CCRBTH View Post
I have a savage axis xp in .308. I have made a few upgrades and I am now considering to rebarrel it in a few months from the sporter barrel to a bull barrel. That means I have the chance to pick a different caliber considering it is a short action with the same .473" rim diameter. The primary purpose will be long range paper hole punching and I would like to eventually try to shoot at 1000+ yds. The second purpose would be medium game hunting (whitetail) at a range of probably 250-500 yds with the occasional big game hunt like elk at shorter ranges (100-300 yds). Should I stick with the 308 or should I go with something like the 6.5 creed, 7mm-08, or 338 Fed?