Originally Posted by
Dave Hoback
Mine is Small Shank. This is the same with barrels. How many times have we seen people come and say their barrel nut won’t screw on the new barrel threads, but fine on the old barrel? And we’ve told them to use sand paper on the the barrel threads. It’s because the sizes are often called 1-1/16” & 1–1/8” for Small & Large Shank. So, 1.062” & 1.125”. But in actually, they are 1.055” & 1.120”, respectively. However, I’ve never heard of any evidence supporting that a slightly tighter or looser fitting barrel nut, lends itself to accuracy differences. Only the overall tightness. The Article Jim did even corroborates this for even using an Aftermarket machined Barrel Nut. They are nicer, better looking & generally better fitting. But does that translate to better accuracy? No, it does not. The barrel to Receiver threading is what dictates how square the barrel is. The barrel nut serves only to lock the barrel in place. So if a nut is slightly loose or slightly tight… as long as it can be torqued correctly, it’s served it’s purpose. While my Barrel Nut was slightly looser fitting than some others I’ve felt, it wasn’t to the extreme that Fuj’ experienced. And my Wheeler wrench fit the nut just fine. The company just sent me the wrench as a kindness. I tighten them to 75ft.lbs. And it is locked in place.
Oh, the ones I have, once fully threaded they did not rock. They were simply a bit looser threading on. So that, coupled with Fuj’s not fitting the barrel wrenches he had, makes me think he just had a dud. Which they would have gladly taken care of. At least the guy I dealt with, who was one of the owners. Super nice Canadians, eh?