back to the subject. IMO the US Krag notwithstandiing Mike's sttrength test is not really suitable for a diet of factory .405. It can be made into a double locking lug like a NOrwegian or Danish Krag by welding up the rear of the safetyrib.and I have had this done on Krags in .405 and .35wcf. However this gives asymetric backthrust and Norse military rifles had a different zero when bolt was wet in rain, hence covered military firing ranges in Norway.