Not sure what 6.5s they're shooting but I've been shooting them for years and have never lost a animal. There are numerous loads by Hornady, Norma, and other MFGs of premium quality that will take most NorthAmercia game animals. I have a 360 bull shot at 487 yards with one shot from a 6.5-284 and wouldn't think twice of using the Creedmoor. I don't believe in solid copper bullets. To each his own but if you look around on this site you will notice that the 6.5s are one of the preferred Long Range HUNTING rifle/rounds! Good luck with the 30-06 and 7-08.