Drew, if those Fox barrels were 0.018" after the honing, they would have only been 0.0225" before honing, which I believe is too thin at the front of the fore end?
I sometimes wonder if the case of honing is not overstated. To hone a barrel significantly requires special equipment, such as a Sunnen hone. How many gunsmiths have such a piece of equipment? With anything less than a specialized hone, you can spend a very long time removing a miniscule amount of metal.