Threading, chambering LW-50 stainless? - 05/04/23
What is the trick to threading and chambering a Lothar Walther LW-50 stainless barrel? Had a local guy do one in 7mm PRC (yeah, I know, should have used Shaen) and he had problems. He said he couldn't use his 8-stud spider chuck cause it wouldn't hold the barrel cause the LW-50 steel was so hard that the pressure he had to put on the carbide reamer to get it to cut caused the barrel to turn in the spider. He was using a brand new Kiff carbide reamer (is that the problem??? ;), but had difficulty getting a smooth finish until he switched from Sulphur based to Tool-X nano fluid. Said he couldn't cut the steel with a HSS parting tool without it going dull cause he said the LW-50 steel was too hard so he had to part it with a carbide parting tool (when he faced the breech). He also said he's not happy with the quality of the threads. Says they look a little rough. Maybe he doesn't know what he's doing? Not trying to be a critic. He was using a high-end Precision Matthews lathe. I pick the barrel and action up tomorrow to send off for nitriding and will post photos tomorrow (if'n I can figure out how). I'd like some candid opinions on the work and the problems discussed above. The next project is going to Shaen for sure (lesson learned).
TIA
TIA