It’s rare to find a small caliber halfstock with half decent rifling. I’ve been freshing barrels and many have pits 0.020” deep. Getting Bobby Hoyt to drill, ream, and re-rifle is most cost efficient. I could advise you on re -cutting the rifling or do it for a price IF the rifling is not awful and extends all the way to the breechplug. If the powder chamber has no strong rifling left then freshing should only be done by a zealous owner because you’re looking at 16 hours of work.
