Help identify this empty rifle cartridge

[nickel plate]

Found it while dove hunting last weekend.
Stamped 43 with no forward decimal point and measures slightly under 1/2" in diameter, thus the 43. Also stamped with capital letters, EW.

[Magilla26]

It could be a 43 Egyptian.

[AGGRO]

Can't open the pic.

[Barbarosa]

Eau Claire Wisconsin munitions plant, 1943. .30 M2 Ball

[Dark Hunt]

Length?
Bottle neck case?
Length to shoulder?
Base diameter?
Rim diameter?

Identify this rifle, barrel about 22"

[SonofWWIIDI]

5.56 ghost bullet.

[AGGRO]

Chupacabra

[CoopsDad]

But the real question- is it annealed?

[strakill]

OP found it dropped on carpet thus making it unrecognizable.

Hey a pic would help at least.

[nickel plate]

It's been on the ground awhile.

[God Bless America]

It's been on the ground awhile.

Chupacabra gnawed the front half off?

M2 ball made in Eau Claire, WI, during WWII as posted above.

[alks207]

Looks like '43 30-06

[ER308]

20 watt phase plasma cartridge

[SonofWWIIDI]

E-Earp
W-Wyatt

43-you don't want to be 44 do you?

[Big D]

It's name is Robert Paulson