I am trying to diagnose a problem with my muzzleloader. I am 90% sure that it is a mechanical problem and would like your opinions on the best place to start. The rifle shoots two groups. First shot is almost always dead center, then I will get a bullet 1 1/4 inches right, then back on center. Sometimes I will get two center then one right, but it almost always throws one or two to the right out of 5 and almost exactly the same distance. Here is a representative target: Rifle is a Shilen .458 #7 barrel; Bullets are 150 grain NAB; Velocity around 3100 fps Target shot @ 100 yards /ubbthreads/images/graemlins/frown.gif Savage Tupperware stock with the action glass bedded. I have poor bench technique, but I think that this is mechanical. Any thoughts? edge.