I've used many Clymer chamber reamers w/o any issues for a long time.
Especially 30-30, 303Brit, 38spcl, 45Colt and acp and 9mmLuger.
But there does seem to be a lot of bad feed-back about them on the net.
If the orig bluing is Hot Salt Blue or Carbona Blue/Charcoal Blue,,the insides of the...