578

  1. K

    Gunsmithing Custom Drill and Tap size (.578 x 28tpi)

    I've been checking around to see if I can find a bottom tap anywhere in .578" x 28tpi. When I finally got a price quote it was $160 for a HSS tap, 2" OAL. Wont spend that much. Does anyone know where to find a tap that size or am I going to have to cut female threads with the lathe? Thanks in...