mtngator,
I have a Ruger Super Redhawk (.44 Mag. - 7 1/2" barrel) topped with a Leupold M8 - 2X scope and this past Sunday I put six shots on the paper from 100 yards with the following results (all measurements are to the center of the bullet hole):
3.21250"
2.21875"
2.84375"
1.09375"
0.62500"
0.56250"
For an average of 1.77604" from the center of the target.
I only have 150 rounds through the gun right now and I am still learning where the trigger breaks...however, the Leupold is doing its job. Great Scope with CRYSTAL clear optics. Any adjustments I have made have been right on.
I suggest that whatever scope you do chose, lap the scope rings before mounting the scope.
Steve