Well if reloading is a sure thing and you have opened your scope of calibers then I change my vote to the 243 Ackley improved , shooting the 105gr A-max you'll have a deer rifle that will work to well out past 400yds and a target gun that could contend ballisticaly at 1000yds.
Their is Lapua brass for it , you can still shoot factory ammo if you get in a situation and the recoil is mild.
Some other great choices would be the 6.5-284
and the 7mm WSM
, both have great brass available and are proven long range calibers and the recoil is tolerable
Again I ask , where do you plan to shoot at long range in you area , the best I can do around here is up in Lumberton (down for you)
and that is only if the club doesen't have anybody riding around which is hardley ever