Decap a 9mm case or a .38 special or 357, mark it with a Sharpie so you know which one you used.
Invert the pistol case and place it over the neck of your cartridge case and measure, make sure it's long enough to touch the shoulder only.

It will give you a reference number, make note of a fire formed case length and a sized case and it's easy to be sure you're not bumping the shoulder too much.

Set the die for that rifle and you're done.

Hunterapp beat me by 2 minutes!!

Last edited by colodog; 05/24/16.
"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen