ID help please

I have this small cartridge that I am trying to ID:

The only thing I could find that was similar was a .22 short but this is clearly a centerfire case. Any help would be greatly appreciated.

Hi, it’s a .22-3-30 made by Eley.

Check this previous thread for more information: Help needed with ID of a small (inert) CF cartridge



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Thank you - I would have never found that thread and certainly echo Sam’s comment about the hit and miss nature of searching for info.

See also the query by Rimfire on these cartridges.
I also posted a photo of the box.