✅ SOLVED Is this a bullet shell?

[wheres_wheatie]

Says "us" on the back, it looks like a small bullet shell but I'm not so sure.

 

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[duggap]

It looks to be a .22 rim fire.

 

[Patriot Relics]

Definitely a shell casing- need the diameter to determine caliber.

 

[wheres_wheatie]

http://www.oldammo.com/may09.htm
http://en.m.wikipedia.org/wiki/United_States_Cartridge_Company
Yayyy found it!