AR15 barrel torque again!

[HankC]

I know the spec is 30 ft-lb min, 80 max, grease, torque and loosen 3 times before final torque and line up the gas hole. I am putting one together and I get the gas hole line up at around 40 ft-lb. Should I just stop there or torque further to the next hole position? 40 ft-lbs does not sound much to me, I built bolt rifles to 60 ft-lb and FALs to 80 ft-lbs. I had a Century Monkey FAL that the barrel wound not budge at 200 ft-lb! I would think more torque would be better (no worry come loose) as long as within the max torque but I don't know if it will exceed max if I torque to the next hole. I know the receiver is aluminum, maybe why the torque spec is low. Should I stop or go next hole? I'm thinking calling it good and stop here but want to ask while this is my first AR barrel build!
This is for a 16" 300BLK if matters.

 

[bcbsr]

Quit while you're ahead , 40 lbs will be fine

 

[hoghunting]

If your gas tube is lined up at 40 lbs, you will definitely exceed 80 lbs trying to reach the next hole.

 

[carbine85]

Anything over 30lbs is GTG.

 

[Highcaliber]

I'll offer a fourth vote for...leave it where you have it.

 

[rbernie]

If your gas tube is lined up at 40 lbs, you will definitely exceed 80 lbs trying to reach the next hole.

This.

It's plenty tight, and the gas tube will keep it in place. Leave it.

 

[CLP]

If your gas tube is lined up at 40 lbs, you will definitely exceed 80 lbs trying to reach the next hole.

+1
40 is plenty. And if it wasn't, which it is, then the worst that would happen is the the barrel nut would push the gas tube off center and prevent your BCG from cycling forward. But 40 is plenty