I had a 12 gauge Crescent hammer gun that was "choke bored" and was bored .701 from the end of chamber to the muzzle in both barrels. Actually, what I think happened was they forgot to finish boring the barrels after they did the choke pass. Probably, a lunch break or end of day mistake. My first and last Crescent.

Approach life like you do a yellow light - RUN IT! (Gail T.)