I just switched from 260 to 6.5 Creedmoor, I only have 56 rounds down my CM barrel, my first impression is the CM recoils slightly less, accuracy so far is ok, but I'm still doing load development, I'm really impressed with Hornady brass, all I did was uniform the pockets and deburred the flash hole even though it appears to be drilled like Lapua brass, the neck thickness consistency is pretty good but I'm still gonna turn them, the polish job on Hornady dies could be better but at 35-40 bucks for the set they work well, and I can't see spending 240 for Redding dies at this point. I threw 4068 rounds down my 260 tube, pick a heavy bullet and I shot it at 2780-2810, and it preformed extremely well, BUT today brass is very hard to come by, Rem 260 brass needs to be annealed just about the time the pockets let go, Lapua 260 shot no better and the pockets lasted only 3-4 firings, Win 7-08 is the way to go, I annealed every 3-4 loadings and some have over 30 firings, I even necked up Win 243, neck turned it and was just as good as the Win 7-08, I know people do it but my advice is don't reform 308 anything into 260, it's too short.