If you start filing the rims on those cases, do you not run the risk of compromising the case and blowing a hole? That's folded steel or brass, and if the former, you will also encourage corrosion.
It's a no brainer to hone the rim recess. It just isn't worth the trouble or risk of rupturing a case. But they are your eyeballs (hopefully safely behind glasses).
I am not sure how removing .002” from the O.D. of the shell rim would compromise the integrity of the hull to cause it to rupture. Just curious as to your thought process, because if I am missing something, I sure would like to know.
I just cut apart a cheddite that, at various points was as thin as 0.006".
I question the feasibility of removing precisely 16.5% of that thickness and not more on a few hundred, used shotshells. Are they even that perfectly concentric and round to do this safely, and expediently to hundreds of shells? And who is to say that 0.05", if perfectly maintained, is enough. Afte rall, they aren't made that thin to begin with - possibly for a reason. After repeated reloading and possibly sketchy conditions that could add corrosion, maybe they won't stay safe, even if they began safe.
![[Linked Image from i.imgur.com]](https://i.imgur.com/qclHjMQ.jpg)
