I currently have a lyman m die that I use to expand the necks on my cases. The expander mandrel is at .3065 when I expand the neck it springs back to .307 Any one know that if 21st or Sinclairs mandrels will fit in the thread of the lyman m die. I checked lymans website I couldn’t find a different mandrel they use a standard 30r mandrel which Im assuming is a universal 30 cal .3065 dia
I want to get a .306 and .3055 and experiment with them to increase the neck tension a bit for my service rifle loads. My neck OD after using 168 SMK in a 30-06 case is at .335
Trying to get the Neck OD down to at least .334 or .3335
Thanks
I want to get a .306 and .3055 and experiment with them to increase the neck tension a bit for my service rifle loads. My neck OD after using 168 SMK in a 30-06 case is at .335
Trying to get the Neck OD down to at least .334 or .3335
Thanks