U.S. bullet ID help

[sonnyjam]

I found this in an old barn. Any help would be appreciated. Thank you.

 

[Retired Sarge]

US = United States Cartridge Co. The round might be a .22, but not sure, but one of the experts should chime in soon with the correct size!

Mike
USAF Retired

 

[sonnyjam]

I think its bigger than a .22. It weighs 8 grams. I guess its not very old, huh?

 

[Retired Sarge]

According to this they opened in 1869 and closed in 1927. I'm sure one of the experts will chime in soon and tell you what caliber the round is.

http://lowelllandtrust.org/greenwayclassroom/history/USCartridgeCompany.pdf

Mike
USAF Retired

 

[TheCannonballGuy]

Based on how it looks against the ruler, it appears to be a .36-caliber. If I recall correctly, the "raised" US headstamp on a rimfire cartridge means it is from the early half of the Indian Wars era. The United States Cartridge Company was established in 1869, so this cartridge cannot predate that year.