From the original post; If you are strictly talking "pre fit" button barrels,
Criterion or Shilen is a toss up. Some barrel smiths have been doing pre-
fits on the cut rifle blanks for awhile now. Your looking at more money
for these. Just a couple of months back, my smith and myself did a nut
job barrel on a Bartlein blank, for one of my wild cats. I have a Brux blank
in the vault waiting on the same, though I may shoulder this one on the
target action.....Bartlein does have a new flavor of 400 series steel out
there for longer wear attributes. May look that over ,and do a carbon wrap.
My son's inheritance will just be smaller.....