I built a 260 Remington instead of the 6.5 CM. They both have the same ballistics and the 260 can be found at any Walmart. The 6.5 CM was a development between Dennis Demil and Hornady. I've know Dennis for about twenty years when he was a CWO4 with the Marine Corp. He was on the Marine Corp Shoot team. I don't knock the 6.5 CM but for reloading all we need to do is resize 308 brass into 6.5
I reload, and don't shop at Walmart! I'm familiar with the 260 also, and like this class of caliber.