Antique ammo ID help

[chromerunner]

Looking for help with ID of this ammo.
It’s rimfire and old.
Thank you for the help.

 

[Catfish]

here's a good place to start. pick some that are close, pull the wiki page and check dims

Complete List of All Rimfire Ammo Cartridges / Calibers Ever Produced

Vintage And Antique Guns, Ammo, Knives And Other Collectable Outdoor And Historical Items.

www.ammoandguncollector.com

 

[1075tech]

Going to have to see measurements with a micrometer or calipers

 

[catpop]

41 cal Remington rim fire derringer ammo
I shot one once a buddy of mine had.
I have one in my possession if you want to compare dimensions.

 

[catpop]

Also a 32 caliber rim fire for Remington single shot rifles and Marlin lever actions.

Last guess is 44 caliber rim fire lever action Henry- yellow boy