Looking at getting choke opening work done on a very tightly choked double, (.045) a Belgium made boxlock from 1930's. As may have been the custom in that era, the choke sections are quite lengthy, the choke forcing cone starting about five inches from the muzzles. If the choke opening consists only of machining out metal in a cylindrical manner, by rough estimate opening to .015 the end result would be choke parallel sections exceeding three inches. I'm thinking this odd configuration may not produce pattern results I'm trying to achieve (skeet 2 or light mod). Is this a realistic concern?
