I've been on a stainless steel pin tumbling binge over the winter and prepped a bunch of brass, my 44 Mag included.
So I finally started loading some on my RL550B and the powder drop die got harder and harder to pull up out of the case. come to find out, the brass was accumulating on it in several striations. I would polish it off and try again - same thing. I called Dillon. They said that's the way it will be with pin tumbled super clean or new brass. The only choice was just to media clean it. I tried old grungy fired brass - no problem because the residue lubed it. I've tried dipping the case mouth in mica - but not much help. I don't want to use case lube because I'm concerned the effect it would have on the powder over time? I really polished the die and even waxed it - a few cases and back to the same.
Anyone hear of a carbide drop or some other solution? I'm guessing I could bell it at station 1 and use a die that maybe did not go so deep into the case - but I'm not sure what die that would be.
I've not had this issue with smaller cases like the 32 cal revolver series in an RL550B or my 45ACP in a square deal press.