@J E Custom , I definitely value your input, but I'm so unfamiliar with gunsmithing, I don't understand most of what you said.
For example, I don't understand this sentence: "With a barrel nut the barrel shank has to be turned down to the thread size all the way."
So...The best I can do is figure that you're saying a small shank barrel nut doesn't take full advantage of the threads on the barrel shank, and so I might as well use a system that uses that extra 1/4" and which will give more stability, especially in the expansion and contraction of the barrel.
But I'm super confused because as I compare the large- and small-shank barrel nut, I find that the small nut is actually larger (7/8" vice 5"8")! What? That doesn't make any sense.
Also, I can't access your website from my work/government computer (It gives me an "Access Denied" error), so I can't see if you offer some alternative. I am aware of American Rifle Company's BARLOC, but I admit that I don't understand it. And I am completely ignorant on what other system you may be hinting at; If I don't use a barrel nut, what other option is there? My action says to use a small shank Savage barrel nut.
Thanks in advance for being patient with me.