What case is this? wildcat off of a 5.56x45

[S13]

At first I thought it was a 300 Hammer (pic of 300 Hammer for comparision)

But nope. It isn't.

w/ 300 Hammer




Formed from a 5.56 Nato



smaller caliber






43mm case length




Probably a 6.5

6.68 after firing

I haven't seen this one before.

 

[Maverick44]

It could be 25-45 Sharps.

 

[S13]

It could be 25-45 Sharps.

Could be. I have a few of those. I'll have to dig them out and compare.

 

[Mike_from_Texas]

Maybe a 6x45?


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[A1Oni]

.20 practical maybe?

 

[Moonpie]

6.5mm Thompson/Center Ugalde?

 

[hornetguy]

I think @Moonpie nailed it.... that was going to be my guess after seeing the diameter.... I used to shoot a 7mm TCU, then they started coming out with the 6 TCU and the 6.5 TCU.... etc.
All off the .223 case. Great little cartridges.

 

[dee]

Shoulder looks to have too much taper to me. TCU runs a 40 degree shoulder like the ackley improved variations.

Here is a 6mm TCU , 223ai, 223 and a 300bo for reference .

 

[prisondoc]

Too long to be 277 Wolverine

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[S13]

Well it isn't a .25-45 Sharps





too short in the potato pic



6.5mm caliber looks right