My method is to tumble lube my cast bullets with Lee Liquid Alox, then size, then tumble lube again, then go through the loading process with my Lee Classic Turret Press.
After I set the seating depth (COAL) I check the COAL with a caliper and after awhile I've noticed the COAL changes to a shorter value.
I ultimately took the seating depth die apart and found it to have the LLA building up on the seating die. As it gets thicker, the COAL gets shorter.
Cleaning the die solves the problem....for awhile.
So, I started wiping the lube off of the tip of the bullets before setting it in the case prior to seating it.
The LLA method is an inexpensive method but I am now considering getting a rather "pricey" Lubri-Sizer device to eliminate my LLA headaches.
Any Tumble Lubers out there that have had this issue?...and have any tips to resolve the LLA buildup?
Thanks