Brass cartridge case?????

[Tango Kilo]

Found this at an old home place dating back 200 years. I have found hundreds of old brass metallic cases from the 20th century but this one has me stumped? It appears to be a brass rimfire case of some sort. Case length is 3/4" long and is 38 cal. best measured. There appears to be a feed dent in the opening. I do not understand the marks on what would be the primer ring. Maybe it is not a case at all and maybe is an umbrella part, Ha. If anyone has ever seen or knows what this is, please fill me in.

Thanks all......................

 

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[nagant]

Lookslike it didn't go off so he kept turning and firing until it went off. Old rimfires did that.

 

[pistol-pete]

Give us measurements in Thousands of an inch and I can tell you what caliber it actually is

 

[Charlie P. (NY)]

Folks also keep a spent round for use in trigger practice. Though that looks like it was a repeated attempt that eventually got it fired.

I think it was the Henry .44 that had a pin on each side of the case.

 

[8Keeper]

That is rare ammo. Check this out. THE CARTRIDGE COLLECTOR
Looks like they tried to fire it a few times.

http://www.collectorsfirearms.com/remington-no-1-sporting-model-38-rimfire-al3055/

 

[Madmox]

Spencer Carbines were rim fire and looked about like that. Of course that is all subjected to measurements

 

[Charlie P. (NY)]

Why do you think the .38 Short rimfire was rare?

https://en.wikipedia.org/wiki/.38_rimfire

38ShortRimFireCartridges

 

[TimberCrack]

You found a stubborn .44 henery rimfire which was capped 4 or 5 times before going off...the Henry and the 1866 yellow boy had dual rimfire firing pins..

 

[8Keeper]

Why do you think the .38 Short rimfire was rare?
No headstamp so it is very early brass. Don't see it often. Rare does not equal valuable. Guess I am always on the lookout for unfired rounds to supplement my gun collection.