converting 6.5 creedmoor brass

Selling off my 6.5 creedmoor reloading supplies as I no longer shoot the caliber. Includes everything needed to start working up loads. -149 pieces of Peterson LRP brass (85 new, 64 1x fired) -300 Federal 210M primers -350 Hornady 140 ELDM bullets -1.5 pounds of Hodgon Superformance powder -1...

Converting 308 to 6.5creed can be done I guess, but I’d like some fine details. I have questions like. How long to trim the 308? What brand of brass works? Does this require neck turning? Does this require aneling? Any other steps missing not mentioned. I have a good lot of federal, Hornady, and...