I continue to have galling on the aluminum shuttle on my B & M powder measure despite polishing the shuttle and cast iron body. I haven't found any info on this problem and I'm wondering if there is a solution that I haven't found.  I've used dry moly lube as well as several hydrocarbon lubes.  It's irritating and it certainly breaks my concentration during a reloading session. HELP!

send the aluminum part out for hard coat anodizing

I have found that mold prep spray works great to lube the measure. Plus the sponge based sanding blocks from Harbor Freight are a perfect fit to clean the cavity.  I tossed the handle and spring long ago and just shuttle the hopper back and forth with my fingers.  I use a rubber and to make sure it stays to the left.  Just found a local source for springs that may be week enough to replace the rubber band though. 

Jack

I used one for several years problem free. There is enough Graphite in the smokless powder to keep it self lubed. Once someone introduces lube it can become an attractant and that could possibly be the cause of the problem. Once foreign material dust etc. becomes embedded in the softer material it might be a challenge to return it to the same state it came from the manufacture. If one trys to clean up the mating surfaces it might increase the once close tolerance and then making the problem even worse. By doing so it could provide enough space for those foreign materials to find their way in there more easily. I simply keep mine clean with no attempts ever made to try and lube it.

JLouis

Sounds like a weaker spring and dry graphite lube will be my best starting place.  I've just finished 430 38 Special loads without the spring and relatively clean of lube.  No problems. And considering the same repetitive hand operation without a helper spring to operate the drum or shuttle works well on other measures, the same should apply to the B & M measure.

I use Johnsons paste wax on my Belding and Mull to lube the slide works great.

Squirt of powdered Graphite.  Once you get it going dust from the powder keeps it sliding smooth. Issue is most seen after storage dry.  Graphite mold prep is a good tip will give it a try.

B&M is really no more trouble than other measures, just different.  Lyman 55 has the same issue if run without graphite .

Boats

I use a 55 for BP.  Never had any problems that couldn't be solves by cleaning the rotor once in a while.   

I have never heard of brass galling the way aluminum does.