I have one creedmoor, and 3 260Remington's. It's all personal preference. The creedmoor with a 140 grain or larger bullet is "supposed" to be able to get alittle more powder in it than the 260 Rem cartridge, alot of that probably depends on individual 260 barrels and how they are cut. Frankly, I really don't care because I run 120's most of the time anyway.