Just about to trim my 1st set of .222 rem cases and my new Lee case length gauge will not screw into the cutter any ideas on the thread 3/16 - 4.8mm is whit, UNC, ANC ??? just need to run the correct tap down the cutter as it looks like the start on the thread has been removed in the final machine process. Want to reload tomorrow & shop not open until Wedneday and too far to drive for a £4 part. Plus I should be able to borrow a tap from works machine shop in morning if I know thread.
Ah spelt gauge wrong in title