Unknown round

It has no headstamp, it is absolutely non magnetic, it measures about 8x20mm. I placed a “R-P 32 S&W L” for comparison next to it. What is it? Would it be a .32 Long Rimfire?
DSCF3066

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looks about like a .32 Long, tinned copper case?
Very hard to tell the maker. Think I might be seeing tick-marks on the rim edge ?
Tinned case without a case hole is perhaps a HPT

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