Cartridges using 6mm and 6.5mm bullets have come to dominate in dynamic long-range competitions (aka sniper matches). The top cartridge in these matches is the 6mm Creedmoor.
The charts below show what the top 50 shooters in the Precision Rifle Series (PRS) are using to shoot and win.
Using heavy-for-caliber bullets (140s in 6.5 and 105s in 6mm), these cartridges are accurate beyond 1,200 yards, buck the wind well, and have moderate recoil. They are also outstanding hunting rounds. –Cal Zant, precisionrifleblog.com