First I'd determine what bullet types are preferred, then range and speed (is that ammo/bullet good for that distance). Last I'd buy ammo in all of those types and see which shoots the best in said rifle. Using factory ammo - IMHO, that is the best you can do.
BTW, if you're looking for something between solids and fragmenting - these might be a good option to try(not cheap, but excellent reputation):
BTW, if you're looking for something between solids and fragmenting - these might be a good option to try(not cheap, but excellent reputation):
6.5 Creedmoor Ammunition North American Ammunition Company
The 6.5 Creedmoor, developed in 2007 as a long range target round, has gained favor in the hunting community as an accurate, efficient mid to long range round. Light recoil helps make this round easy to shoot for all shooters, aiding in precision. Please call North American Ammunition Company...
www.northamericanammunition.com