I have a mod 29 44 mag. Its very accurate besides one cylinder. Looks a little over bore compared to the others. I get 1" groups at 25 yards with the other 5 but this one drops the shot from 1" to 3" consistently.

If I have it reamed, it could cause inconsistent results. Is the cylinder screwed? I haven't had a chance to chrono the differet cylinders, cause it really doesn't matter if it's inconsistent.