Re: Alox and Mica
It will have no effect. Several companies, see Hornady for one, treat all their swaged lead bullets with find powdered mica.
Then again, unless you roll your ammo in the dirt, the tackiness will have no effect either. I never had any problems when I started to use LLA, and never even considered that tackiness was a problem. Bullets shot great and barrels were free of lead. Never had any build-up on the seating stem. I just knew that, at the indoor range, I would occasionally breath in some fume and didn't like it, so I started to cut back on the LLA.
Now, I don't size any of my cast bullets (did a whole bunch of testing in the mid to late '70s and found sizing NEVER improved accuracy, so I stopped) and you might want to try some as-cast and lightly tumbled in LLA/Xlox.
All you need is a coat on the bullets such that, when tumble lubed, they appear no more than shiny and wet. They do NOT need to be amber/brown. It takes VERY little LLA/Xlox to do the job.
You can go to the cast Boolit forum and look up Recluse's formula for 45% LLA, 45% Johnson Paste Wax, and 10% Mineral spirits for a formulation that will eliminate the tackiness that bothers you.