I been a avid pistol shooter and ar15 shooter. I am looking to get a ar-10 variant just not sure about the 6.5 creedmore round. The purpose of the gun would be target shooting at a max distance of around 500 to 600 yards. I am not shooting matches and just shooting for sport. My 2 guesting are price and availability of ammo. I realize right now ammo is a little short all across the board right now. But if it gets back normal would it be hard to get 6.5 creedmore as a pose to .308. Thank you all for your time. I am also a new member on this fourm and hoping to get quality advice from anyone. Thank you all in advance. And God bless.