I have the Lee 4 die set. I see the 3rd seating die can be screwed down to crimp the bullet. I wish i had know that before buying the 4 die sets. I didn’t know the factory crimp would cause problems with cast boolits!
I hope I set the sizing die correctly.
The way I initially set this die: I used a empty piece of brass and screwed the die down until I couldn't turn it by hand any more. Then i removed the brass and gave the die another 1/4 turn. Then I put a factory load in the die and screwed the seating part of the die down until it touched the facotry rounds bullet.
The rounds look to be crimped.
I sized my rounds a bit longer than 9mm specs. They fit the mags on both guns fine and chamber in both. They are 1.1875 long with 125 gr round nose. I figured the closer to the rifling the less gas blow by!
It is weird that mt XD 45 will not chamber full length 230 gr cast 45s. I had to make them shorter than 230 gr FMj ball ammo. The gun would not go into battery. The case was protruding past the end of the barrel where the base of the boolit is supposed to be flush. The FMJ has a more pointed profile than the cast round.