So seems only thing in na gun magizine now days is 6.5 creedmore.Some hoe its the holy grail of guns. I am not knocking it. Just that looking at ballistic numbers I do not see it as any better rnd than a lot of older tried and true rounds. Give me your sells pitch.
The BIG Question is: What are you going to use it for?
Hunting?
Long-Range paper n plinking?
Both?
And can't forget the SHTF Militia work.
QUOTE:
"In October 2017, U.S. Special Operations Command tested the performance of the 7.62x51 NATO, .260 Remington, and 6.5 CM cartridges out of SR25, M110A1, and Mk20 sniper rifles. SOCOM determined that the 6.5CM performed the best,
doubling hit probability at 1,000 meters (italics mine) increasing effective range by nearly half, reducing wind drift by a third and having less recoil than the 7.62 NATO rounds…"
Both the .308 Winchester and the 6.5 Creedmoor offer all-around performance for a variety of hunting and shooting applications, but there can be only one winner. Petzal weighs in and compares these two cartridges for accuracy, recoil, and effectiveness on game.
www.fieldandstream.com

In a AR10 (.308) platform, the 6.5 CM upper uses the same .308 or NATO magazine.
If you have an AR10 type multi-cal lower, then I'd get the 6.5 CM upper.
(I got one about a year ago for under $400. 24-inch SS fluted barrel.)
Buy a heavier 5-oz. buffer too.