.22 Hornet is a problem--small diameter neck, thin brass
The goal of our sizing die is to provide a case neck inside diameter 0.001" smaller than a standard bullet. This inside diameter changes with the case wall thickness. We have to take a nominal wall thickness, add it to a standard bullet diameter and that gives us a neck diameter in the die. The thin brass on the Hornet is the problem.
If we make the hole in the powder measure any smaller, powder will not drop through it. It bridges.
