I live in the Pacific Nw. I need to have the chambers lengthened on a J.Blanch 20g which has steel sleeved barrels- walls are .033 and .037. Present chambers are 2 1/2" would like lengthened to 2 3/4". I don't intend to shoot modern high brass shells but would like the option of shooting RST Falcon 2 3/4 lites thru them . Can any one recommend a gunsmith in the area- not Kearcher as he is retired as u all prob know. Thanks!