Originally Posted By: Mike Harrell
....my die set came with a .373 expander. Not large enough of course....

For a .375" diameter bullet? Sounds like a good hunting load level of grip. If you need a tad more, maybe you can pick up a bit of flare using part of some other die that you already have on hand.

Sorry if I'm thinking about it wrong. I figure .001" under for cast bullets is a good possibility, chances are jacketed bullets could stand a bit more. Best of luck getting it up and running.