09-19-2017, 12:36 PM
A 20" 6.5 Grendel at your elevation will be very capable. I've shot my carbine gas 16" 1:9 twist 6.5 Grendel out to 600 yards and got less than an MOA groups. Using a 20+" 6.5 Grendel at 600 yards is very doable, spend some time comparing the velocities from the different barrels. May help you decide which barrel is best for your goals.

