Well, my .357s are causing me grief now. There's not enough adjustment in the sleeve to bottom out the bullet in the press. That causes the lube to ooze in under it and make another mess. It's just your basic 158gr flat nose bullet, but there must be something that I'm not understanding here.
Lube filling under the bullet is usually too much pressure on the lube reservoir. It takes very little pressure to fill the bullet lube grooves on the bullet. Try using less and less pressure on the lube ratchet until the lube grooves do not fill all the way in. Then increase the pressure (another "click" on the ratchet), so you can see how much pressure it takes to fill the grooves without getting under the bullet.