Having just started reloading in volume, I picked up some .45LC bullets from Bonus Bullet Co. They were .452 dia. and 250 grainers. They also had a lube groove filled with a blue wax material. Well, I didn't think anything about it, so I just started loading up. Afte about 800 rounds through the seating die, I had a bullet stick in the die. It took 15-20 minutes to get it out. When I did, I found all sorts of wax built up on the seater plug and insides of the die. I cleaned it up and then bought 1,000 .45s from Bear Creek Bullets. The Bear Creek bullets had no waxy lube and the seater die required no special cleaning.
So, what did I learn? Not to use a bullet that has a wax lube on it. After a while, you'll have problems. Anyone else have this happen to them?