At the Swiss meeting I came across an interesting item. There were a small number of them on a table. The guy at the table spoke no English so I came away with no explaination, nor did I ask for his name. I initially thought they were a variation on the standard Swiss brass drill round (on right below). After looking at it more closely, I think these are subcalibers of some sort or perhaps a reloadable blank.
The “subcaliber” looks like it is a normal Swiss solid-brass drill that has been modified by drilling a 1.78mm hole from the base through the tip and opening up the primer pocket to 4.6mm accept a small pistol primer. The four punch marks appear to be to retain the primer a bit.
In addition bullet shape has been painted or coated gray material which may be like Teflon. Finally the body of the case has been turned down. The standard drill is 9,89mm just forward of the groove while the “subcaliber” is 9.57mm. A close look shows that the case is now slightly semi-rimmed and the case area shows a turned finish that is not on the standard drills. There is a pocket forward of the primer pocket that could be intended for a small lead ball. A 2mm lead BB would probably work well with a primer to push it down the 1.77mm bore.
These may well be the residue of someones casual idea for a training cartridge or something more serious.
I would appreciate info from anyone who has an idea what these are, or who made them.