Well, I should have plenty of that. The through-expander in the Lee 3-die set opened the necks just enough to seat the LCs and some Nosler .458 300 gr BTs I pulled from some ML sabots. After seating, the necks measured right at .480 and all the rounds passed the plunk test.
Now, if the weather will just cut us a little slack, I can shoot this puppy.
