At risk of losing my longest lurker(least post)status, methinks a reline would be cheapest in the ,25-35 or 25 rem...30-30 has the right extractor for the 25-36marlin or 25-35 win. one of those ole profiled 158 30-30's and a rifled liner, some 'poxy or solder and a reamer, a dremel, drill bit, drill bit extension.
Sorta like the ole days automotive wise....A coil..a little oil... a 2"board an ya got yerself a ford..;-)