Every barrel is precision, instrument-inspected for absolute
straightness and, air gauged for maximum uniformity to yield the
greatest accuracy possible. Land and groove tolerance from
breech to muzzle can vary only .0001". Only a barrel that meets
these demanding criteria wears the XX Premium stamp.
SPECS: Stainless or 4140 chrome moly steel, #7 contour,
27½" (69cm) long. Muzzle end marked for tightest taper.
Not chambered or threaded. X-Long Unfinished blank 30" long.
Catalog page 161