What Caliber are these ?

[Digger]

Had this pic in the Kit room forum talking about Lemi shine , cleaning brass ....
Picked these up in the desert near a military base , left one as is and thru the other three in the batch .... any how they measure 3/4 of an inch at the case mouth and the little one in the middle is my 38 special reload ...being the dummy I am ... are they fifty cal or so ?
29062

[stubshaft]

Looks like a pair of 20mm's

[mooman76]

And would it be 4" tall. 20mm

[Digger]

And would it be 4" tall. 20mm

OUCH ! .... :bigsmyl2:

[EOD3]

Based on what I can see, they're 20MM Vulcan cases which should have electrically fired primers.

My question is why are you trying to pass off that center cartridge as a 38?

[JSnover]

Based on what I can see, they're 20MM Vulcan cases which should have electrically fired primers.


Yep. Look for a tiny little pinprick on the primer, it won't look like normal firing pin strike.

[Digger]

Thank you gentlemen for the information , always learning ....EOD3 , the 38 in the middle just happened to be close by , pulled it out of a box I had just finished reloading , the boolit is MIha's 125 gr hp at .358 and been using them in my 586 lately.
The same boolit is in my avatar sitting in a bunch of 9 mm's at .357, so far very nice.
And what you mention there JSnover is true .....if you click on the pic , and maybe if your browser allows click again to bring it closer , you can just make out the very small dent in the primer ... was not aware ....electrically charged primer ? . . interesting !
I can hear it now ! .... scenario: . .. Dude ! take those jumper cables and connect the ground clamp from the negative post to my grip frame , .. now take the positive cable and clamp from the post and hold it ! ...When I yell NOW! ... touch the hammer Dude ! ..[smilie=1::grin::groner:

[missionary5155]

Greetings
Main gun rounds for the m68 105mm gun used on the m60A1 tank are electrically fired.

[Digger]

Now that you gentlemen got my curiosity up , .. found this
http://youtube.com/watch?v=1xh2tfZrhBO&feature=related

Dog gone .. can't get the link to work .... 20 mm Vulcan rifle on youtube.com
ooooooooouuuuuuucccccchhhhhh!

[JIMinPHX]

Not all 20mm rounds are electronically fired. The old fashioned kind do still exist. The case profile doesn't look quite right though. That .38 shell sure has a big looking primer in it.

[beagle]

The electrically primed 20mms take a pretty potent charge. 320 VDC if I remember correctly. GE used some pretty sophisticated electronics to make that from 28 VDC aircraft power but it works well on the Cobras./beagle

[EOD3]

Not all 20mm rounds are electronically fired. The old fashioned kind do still exist. The case profile doesn't look quite right though. That .38 shell sure has a big looking primer in it.

I thought of accusing him of pawning off a 30 Carbine round but the rim looks just a little bit wide... Dono, perspective problem I guess. Digger sounds pretty sure of himself though.