VH,
There is another choice. You can have them sleeved. If the gun is otherwise in good shape, this may be the only economical solution. It won't be a collectable afterward, but it probably isn't now.
Yes, of course - or sub-gauge tubed, or for a 12 bore, Teague-lined. But I was answering the original question: "At what point do they become too bad to work with?" No one had actually answered the question that I could see. My answer was an attempt to explain how to arrive at that determination. I had chosen sleeving as the only solution for the Parker 28, and even made an attempt to contact John Foster about it, but for now I'll wait. Maybe Teague will one day offer their services for other gauges (wishful thinking...).
