skeet,
I can't speak for all Wilson barrels, but the one on my
RRA 20" heavy barreled upper, is plenty "premium". I
have shot a couple of high 1's, a number of 2's, and
regular 3's. Anything over .5 MOA, and I have drunk
too much coffee, or the wind is up. It cleans up easily,
and collects very little copper. Mine is pinned to an
Armalite NM lower, with some tweaks to the fire control
group /ubbthreads/images/graemlins/grin.gif
I have yet to see a "bad" Wilson barrel. I assembled an
AR-15, for a friend, chambered in 7.62x39 Russian, with
a Wilson barrel. The last group of load development
ammo, on my range, before the friend took it home to Texas,
was .5 MOA. It was just a plain jane Wilson 16" Chrome Moly
barrel. It too cleaned up easily, and collected little
copper.
I am not sure if my heavy SS Wilson barrel, is considered
"premium", put it shoots "premium" groups.
Squeeze