This going to be interesting due to the fact that there are many informed reloaders on this board. I own two 6.5 firearms. One is a 260AI on a Remington 700 mountain rifle and a 260AI on an XP-100R platform. Now, this is approx. 5% larger than the standard 260 cartridge. But, accuracy is incredible. Now, as for the 6.5 Creedmore, 260 and 260AI, there is relatively the same water volume for each with approx. 5% difference. IMHO, I believe it all comes down to marketing. MTG
