Not knowing your set up, A few years back I had some problems with a 30 cal, rifle mold taking lube, the problem was a Lee mold, the Lees have shallow narrow lube grooves, and any sizing just makes the problem worse.
I only use Lyman or RCBS molds with my 450, both have larger bands, and the problem went away.
I run a variety of lubes, and found the best set up for me was to wire a light dimmer to a receptacle, the light dimmer being a rheostat allows me to adjust the amount of heat I apply to the lube.