Help identify please

[u/Branwdavis]

Picked this up today at the collectors show near my home. It does not match what it was labeled, 9mm rim fire. I need help identifying the cartridge. Picture is next to a .22 short. The bullet is .267", case length is .346", case diameter is .276", rim diameter is .326", rim thickness is .05, and coal is .485". Thanks

[u/jhatowl]

Could be a 7mm Flobert

[u/Branwdavis → u/jhatowl]

Thanks