I have a 586 "M" gun, and the barrel isn't clocked perfectly. The error is such that the rear sight blade has to be almost fully to the right for POA=POI.

Since the cylinder crane isn't locked in place on the same axis as the barrel or the crane pivot, how can alignment between the cylinder bores and the barrel NOT be affected?? I have a gun that doesn't hit consistently (about a 4" pattern at 20 yds.), and the hand is worn causing the timing to be off. I haven't owned the gun from new, but visually it doesn't appear to have seen all that much use. The timing and lockup are much worse than my pre-Model 10. I think there could be an interaction between these two problems.

Comments?