Been using it for the last 2 years w/the ceramic ball applicator. .Just sized up a batch of 20 270 win with ordinary rcbs dies.I use a shaved lee shellholder for no toggle over for perfect head space control.I've done a little tuning on the expander to make sure its centered in the die. Slowly pull the casings over the expander....goes like butter.Result: spot checked 4 of the 20 resize brass....not a one has over. 001 run out. And...with the lube in the neck I know the bullets will seat like butter too. Sure hope my gun likes a few new trial recipes cause all else should be "good to go"!