Lube straight wall cases in carbide dies?

I use carbide dies and I have never lubed a pistol case when sizing. I tumble them to make sure they are clean before I start and have never had a problem.

That had been my experience for ~25 years before I got these two die sets in 32 caliber. Either something has changed with Lee's production QC recently, or there's something different about sizing 32 cases compared to larger diameter ones.

One thing that occurred to me recently is that, if cartridge case walls are generally about the same thickness, it may be that the smaller diameter of 32 cases makes them "stronger" in the sense that they resist being squeezed by the carbide sizing ring a bit more than larger diameter cases. That can't be a complete answer, because the die that Lee polished clearly worked more smoothly than before the polishing. But perhaps the difference in strength, or stiffness (if there is one) is just enough to make the smaller case more susceptible to having brass squeezed off the case and becoming embedded in the carbide ring, and causing scratches after a while. Any engineers out there? Does this make any sense?

In any event, I now have a can of One Shot, so when the next reloading time comes I'll be ready to try it.

Sadly, S&W condemned my new 432 when I sent it in for a couple of problems - that it came with, new in box. Cannot be repaired and they have no 32 caliber guns to offer as a replacement. So at the moment I'm down to 2 guns in 32 Long only, and I have all of my Long cases already loaded up. I was going to try the One Shot on some new Starline brass in H&R Mag, but I'm going to wait to see what kind of gun, if any, I can find to replace the 432 before I load up any more ammo that won't fit in any gun I now own.
 
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I have never lubed my pistol cases except for .38 S&W. Similar to the OP's scratch problem with the little .32. It's the only Hornady die set I use BTW.
 
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