I’m use an ARP chamber in the 6.8 and it eeks a bit more velocity. I figure 2500 FPS from checking dope yesterday. I was hitting higher than expected at 400 and adjusted. The Hornady factory load is pretty mild. If I get the itch to hand load should easily attain 2560-2600.
Only .1 mil windage behind 77gr SMK at 500.
Left: 6.8 120sst at 2500
Right: 5.56 77 SMK 2650
I went with 6.8 SPC II for my "large" AR round. A 110-grain bullet at 2300-2400 fps is more than sufficient on Alabama deer and the distances I need (maximum of 150 yards and often less then fifty yards), and I can use my current lowers. I had White Oak Armament build me the upper and installed it on a BCM lower. I added a Leupold M8-6X scope. I have a Larue trigger for it but the lower has the stock BCM trigger still installed.
A shooting buddy went with .300 AAC (BLK), and he likes it for hunting as well if he runs supersonic loads.
6.8 mm is my favorite hunting cartridge in an AR15 out to 300 yds or so.Really surprised there isn’t more 6.8 love.
Facts matter...Feelings Can Lie
Excuse the threat drift, but I'm curious how the 6.8 compares to the 6.5 Grendel for medium sized game. I'm considering an "alternative" AR caliber for deer in CA, and was leaning towards the 6.5 G. Cans are out of the question here, so 300 BO is not really a contender.
(P.S.: my question is for the P-F braintrust, not just Doc.)
Last edited by Mark D; 05-05-2019 at 08:49 PM.
From a pure ballistics view 6.5G is better. Many reports of Grendel feeding issues and bolts breaking scared me off vs the no muss no fuss 6.8. One day the industry may get it ironed out. I'm sure some 6.5G users probably are getting close by now.
I'd like to see something like the Tac 6 go mainstream. 6.8 SPC case with the shoulder bumped back to accommodate the 100gr+ class of 6mm bullets.
My Alexander Arms 6.5 Grendel 16” lightweight upper has been flawless. For a $600 upper, I’m blown away by how accurate it is out to 900yds.
Last edited by Clusterfrack; 05-05-2019 at 09:58 PM.
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