My first post here. Hello from Maryland. Some counties in our state have gone to allowing straight walled cartridges. I had an old and ugly 336 in 30-30. I sent it away and had it rebored to 375 Winchester. Out of 5 shots, 3 to 4 of them will group in about 2 inches and then it throws one or two well out of the group. Both with reloads and Buffalo Bore 38-55 loads. The smith said it will chamber and shoot both 375 and 38-55. The dispersion is predominately vertical and can be 5 to 8 inches from the group high or low. I have tried two different scopes, a Vortex and a Leupold, rechecked scope base and rings screws for tightness. At this point I have removed the forend and magazine tube and plan to shoot it naked while resting on the action and see what happens. If it is still squirrelly I plan to firelap it.
Any thoughts or similar experiences that you figured out? Any one know a qualified lever action smith that will tackle a rebarrel? It seems like some of the long time levergun smiths have retired.
Thanks, Bill