Cleaning up Somme ground-dug 303 Great War SAA.

[blurrededge]

That's an interesting cleaning tip Roger. I have a few fired .303 cases I pulled from rabbit excavations years ago, atop the cliffs of Ventnor Isle of Wight, close by the radar site that took a pummeling from Stukas in 1940. They're pretty fragile but I'll give your method a go, I know one of them was from a bren due to the distinctive oblong firing pin mark in the primer, might get some dates etc.