Been lurking a while, but this is my first post. Among some various reloading equipment I recently acquired was this rimfire cartridge. I didn’t use a micrometer on it. Just estimated with a ruler on approximate size, so I could be off a little. I’m THINKING 32 rimfire, but I’m not sure.
Thanks for any info on this. I’m not a collector, nor have I ever handled a round like this before.