04-04-2016, 03:49 AM
Squatchy Wrote:Built my grendel upper over christmas. First issue was the gas port was drilled too small on my barrel. Drilled it out and it's now g2g. I emailed Odin and they said I got one of their "old generation" barrels and the new ones are drilled out to the proper size. Accuracy is about what I'd expect( .5moa to .75moa with TAC and CFE 223). The velocity just isn't quite there for a 20". I'm still in the process of trying some other powders though
Factory hornady 123 amax were averaging about 2488fps. Not bad but there are other barrels out there that are the same length or shorter that will shoot that round faster
What temperature were you shooting in?
Factory 123gr AMAX averages anywhere from 2439-2456fps for me from my 16" AA.
Factory 123gr SST from my 17.6" Lilja averaged 2471fps last time I chrono'd only 5 of them.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com