I've been through the NRA Gunsmithing book and they do mention using a 03 barrel as a replacement for the Krag. However after cutting off the chamber end and facing it off you're only left with about 20-22" of barrel left. So if your barrel falls within 20-22" could be better than an even chance they the barrel is from an 03 Springfield. In any event very fine looking custom Krag. Thanks For sharing. Frank