Anyone running a 6.5" barrel in 300 bo?

A barrel that short in 300 Blackout may not Stabilize some rounds, especially Subs. AAC  used 9" as a minimum for General round Stabilization.

Yeah, I've been researching this issue for awhile, almost cross-eyed from reading...LOL!  Gotta agree on the 9" area being more optimal for shooting both.  For the most part it looked like 8.5" was generally the shortest worth going to.  I just ordered a 9.5" 1:7 barrel from Ballistic Advantage which will mainly run suppressed, but since I reload I will probably dabble with supers also.  I just borrowed a friend's 16" 300 BO and shot it with supers and subs with and without suppressor.  I could see going with the longer barrel if shooting supers only.  

Still, if you do read a bunch of results from many different shooters, you'll get a lot of different opinions and experiences.  Some of that is probably due to different twist rates, gas port sizes, gas system lengths, and ammo.  Since I wanted almost exclusive suppressor use, I went with the 9.5, but I would have been fine with 8, 8.5, or 10.5.  While researching this I saw almost nothing about 6.5" barrels.  I think if it were the hot setup for a given use, I would have seen more about it.  But who knows?

6.75" MCX 300BO barrel here.  No problems.  

Not your typical AR barrel, though.