ar-15 6.5 ammo

Question
can any 6.5 ammo be fired through a 6.5 grendel, 6.5 creedmore, or a 6.5 sporter? Are they ammunition specific gun calibers

Answer
There are at least ten cartridges that that have a projectile diameter of 6.5mm, none of which are compatible with another. In most cases cartridges for one chambering will not even fit into a firearm chambered for another cartridge. In NO cases should you EVER try to fire a cartridge in any firearm except that that firearm is marked for that specific cartridge.