Help on reloading 6.5 creedmoore

I have plenty or Imr 4350, and Imr 4064, have 300 rds vdl target and 300 rds long range bt target, and plenty large federal primers, what I need is load that I can shoot out to 500 to 800 yds. this is a Savage 10 fcp-sr with 24'' barrel. Help PS I HAVE RELOADED MY OWN 7MM MAG FOR YEARS . But would like some good advice on load.

Savage is a quality product so no worries there. Far as load advice I'd look at 4350 first then 4064. Why that powder selection? I'd want a slower burner for long range work. After you find what you like bulletwise reshoot in October when tempatures&humidity are lower.

Thanks