Re: M121 with barrel bulged...
I'm no expert by ayn means, but I have a Rem. Mod 12, it was my dad's when he was a kid and given to me when I was 10 (1959). I never noticed the "barrel bulge" till about 10 years ago. But I shoot it more now than any other .22 I have because with shorts it's very quiet. Hundreds of thousands if not millions of rounds fired through it, it ought to bulge. Thinking of replacing the barrel but it would be a used one and maybe no better off than what I have.