I had two Ultra 308s and two Handi 243s that I finally gave up on due to stuck cases and poor groups. No amount of chamber polishing, ejector enhancement, o-rings or chants would correct the problems. I suppose the newer style extractor would correct the sticking cases issue, but to me this also removes a lot to the Handiness. Then, on the other hand, I have a Ultra 25-06 that has out shot my Remingtons and Brownings 25-06s. Go figure!!