I have been searching for a 1 3/8 ball end mill and cant seem to find one. (That is the external diminsion of a remington 700 isnt it?) While I was searching I decided I may as well pick up some good endmills for some common gunsmithing practices, like inletting for the trigger guard etc. Any body know common sizes for this purpose. Any common sizes for opening up barrel channels? Any tooling suggestions period? What about indicators? I do not want to spend a whole bunch on them but would like some quality equipment. Action trueing mandrels-fixtures? PTG or Manson for the mandrels, is there anything better than these?