Originally Posted by bajabill
Bought a used savage barrel and it is about 1/2 inches shorter and the threads extend into the factory stampings. I think this barrel was set back and rechambered - same cartridge 220swift. Is there any other concerns than that the barrel threads on well and was chambered properly. If it was "shot out", would this typically have restored it. I am not expecting competition level accuracy and probably will never send 300 rounds thru it. I know the true test is to shoot it. Seller offered to take it back if I am not happy with it but I think I want to shoot it.
If the barrel was originally a .220 Swift that was shot out, 1/2" setback won't do much good. The significant throat erosion, which comes from thermal shock fatigue, will extend up the barrel a good 1-1/2" or more from the throat.
When I set back my .22-250 I had to cut off the whole old chamber to get the new throat past the errosion.
On that basis, I'd take a look in it with a borescope. Examine the throat and crown. If the throat looks like a dry lake bed past where the new leads end, I'd send it back. If it doesn't, I'd install it, carefully head space it and check with both go and no-go gages, and see how it shoots.