Here’s something for you “big boys”. I’ve been asked to identify the attached. Being a .450 CF collector, all I can tell you is that it won’t chamber in my Beaumont-Adams conversion (the cylinder jams!). I suspect it is the nose cap of a shell but what caliber and vintage?
There are no markings that I can see on it except for the black painted ring. Overall length is 3.64 ins (92.6mm) and the diameter at the widest point is 1.92 ins (48.8mm). Top part is aluminum and the bottom is brass.