From our customer Wayne M.
I load for two .40-65 rifles, sometimes with different bullets for each rifle & do a good bit of experimenting, I spend a good bit of time tweaking a standard powder compression die. I could measure the length the stem sticking out of the top of the die with a vernier caliper and write that down for each bullet and load which would be a no-cost simple solution. But since I experiment a lot I desired a micrometer adjustable compression die. Since no one makes one that I could identify, I built one relatively cheaply from two of your existing available parts plus a low cost part from Track of the Wolf – total cost was $33.97 + shipping. See the attachment. It works great
BTW, as you are aware Lee makes three different micrometers. The difference being the length of the stem inside. Only the handgun version will work for this application. And your powder through expander die comes with a factory powder through plug which is replaced with the Track of the Wolf powder compression plug. Track of the Wolf sells powder compression plugs for .38, .40 & .45 calibers. They are all made to fit your .45-70 powder through expander die.
