Purchased a used Krieghoff 22. cal. short insert barrel a while back. It was my first venture into insert barrels and a pig-in-a-poke. I bought it just to try it, with no return privilege. The education that followed was enlightening. First, no two barrels are usually just alike in chamber dimensions. When buying a used insert, the "pads" have been fitted to the I.D. of the last gun. By pads, I mean both the fixed two raised points near the extractor end, and the two floating ones in the milled grooves. They were filed to fit the last barrel. It would have been grand luck if the last owner's barrel chamber was smaller in diameter than mine. Unfortunately, in my larger dia. chamber it is just loose. So, what to do...Tig welding would be one alternative to replace the metal and give adequate meat for filing to proper fit. It would also necessitate rebluing, it is not particularly cheap, and there could be unfamiliar complications to the application of such heat. I risk being labeled a bottom-feeder, but what is wrong with building up the rear solid pads with Devcon Steel-Bed material? It is used to bed rifles, and will only be providing a snug fit to the sides of the chamber. ("And no, I am not of the JB weld will fix anything school!") Honestly, though, some material must be used to build it back up again, else I now have an insert shaped paper weight. Is tig welding the only viable option?...Steve
