Re: 6.5 Grendel AR15...
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: T-Hoe</div><div class="ubbcode-body">Are you guys building your own uppers or are you buying them complete? </div></div>
With a little googling; you will find several providers of 6.5G uppers. I built my own, and will offer some tips. YMMV.
To take advantage of the longer range ability of the Grendel, you will need a good, stiff, upper receiver and a quality barrel. Around 18 inches would be my minimum and I'm currently using a 22 incher. My barrel(s) came chambered, barrel extension in place and with a fitted bolt. Many Grendel owners use the JP adjustible gas block because some barrel providers over gas them.
How do I like the rifle? Love it! Handles 100gr. to 130 gr bullets well, and provided that you don't hot rod it, most loads prove very accurate in a good barrel.
My max range, so far, has been 600 yards and when I do my part, has held minute of angle or less with 120SMK and 123 Lapua bullets.
A rule of thumb provided to me by a 6.5G forum member has proven to be very close: Using 120SMK @ 2600fps
100yrds 0
200 +2moa
300 3-1 +2 (The 3-1 is yards in hundreds - 1)
400 4-1 +3
500 5-1 +4
600 6-1 +5 (Total of +16 moa @ 600)
Again this is a rule of thumb that has worked with MY rifle combo. YMMV