Handloading .223 55 Gr Vmax for Accuracy. What powder?

Just started reloading, beginning with 6.5 Creedmoor- I know what powder to get because H4350 is the pet powder for that caliber. But looking to pick up some powder for my .223 bolt gun next trip to the reloader supply store.

Any recommendations? My 24" bolt gun preferred Factory 55gr V-Max for accuracy up to 500 yards, where I'd be shooting these reloads. Would like to shoot the same bullet. Any suggestions?

Thanks!