Unknown Rimfire

Raised FW headstamp
What caliber and who is the maker
.409 Rim
.386 c/m
.379 blt
.741-.753 c/l
1.178 o/l
RSD%20FW%20Rimfire RSD%20FW%20Rimfire%20a

Greetings Bob,

A raised “FW” headstamp was discussed on a 30 long.

It also had the not well defined thick rim thick rim. It was attributed to Felix Warnier.

I’m not sure what your’s is. 380 Long?