For a Trojan, sounds like the most practical solution is a set of subgauge tubes. Sleeving and Teague re-lining cost double the price of the average Trojan. Welding of holes in barrels, done by expert hands, has been done successfully but many would not feel comfortable with that. However, it sounds like your hole is more than a foot from the breech where pressures are fairly low. If the barrels aren't eaten up with corrosion between the ribs, it is at least theoretically possible that they could be repaired (requires a rib relay and still a large bill if you don't do that kind of work yourself). There are English gunsmiths who weld barrels, but I don't know of any here who publicly advertise that they do.
Last edited by vh20; 05/12/09 11:19 PM.