if you are going a new barrel a 243, 243AI, 7mm-08 or 7mm-08AI and others will run right in with that CM loaded appropriately in a similar twist barrel. If you want a CM though you better just go for it. 6.5CM does shoot well, I have had 2 of them. Most of these cartridges are really just a variation of an older cartridge but taking advantage of the newer bullets, barrels and twist rates and powders. I guess they are all fun. Haha.
