Find the platform of your choice in any .243, .260, 7-08, or .308, and have JES rebore for ~$250.

FYI, you cannot rebore a 6.5 Creedmoor to a 308 based cartridge. Though the longer 6.5 CM mags for the T3X work very well for allowing longer 338 Fed loads. The Kimber platform limits you to 2.82”.