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?