Factory 26 inch, 2 3/4 chambers (which measure 1/16 less as is usual,)standard rib,small silver front bead.Wall thickness starting at breech and proceeding at 2 1nch intervals:
Right .185,.120,.100,.076,.050,.042,.037,.035,.035,.035,.034,.032,.030,.035
Left .185,.120,.094,.065,.049,.040,.039,.035,.035,.035,.035,.035,.030,.037
10 lands;10 grooves right twist about 3/4 turn in length of barrel.
Usual Winchester markings;was choked:R imp-cyl;L mod