To keep the terms straight, my 16 to 20 was barrel and chamber sleeved the whole thing. Lugs and ribs original rest new. Ended up about 8 oz heavier than when it was a 16 from best that I can guess. 16 that was probably too light to swing good to a 20 that has a lot of barrel weight and swings very good. Not the gun for everybody though.

Boats