Greetings @Bagheara,
The 6.5 Creedmoor is the cartridge that the .260 Rem should have been but Remington saddled it with a slow rifling twist and a case that was too long to allow seating the ogive of High BC projectiles outside the case in a short action. I expect that the .260 Rem will fade away gradually with fewer and fewer manufacturers chamber for it. The 7mm-08 is a different matter. It has replaced the 7x57 for most manufacturers which still chamber it including Tikka, Sako, Bergarra and Ruger etc. I don't see it dissapearing any time soon.
One thing I did note is the number of manufacturers that offer the 6.5x55 these days. The round shades the Creedmoor when loaded to the same pressure but needs a long action.
Regards Grandpamac.
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