Unknown 75mm X 580mm Cartridge Case

[M8owner]

I have been offered this item for sale, but it has no markings. May I request our member's help in its identification. My guess is that it is French due to the press in style primer. Neck diameter is approx. 75-80mm. Height is 580mm. Thank you.

 

[Tony Williams]

The closest in my Ammo Data Tables seems to be the French post-WW2 AFV case for the AMX-13 light tank, but the rim diameter might help. See: http://quarryhs.co.uk/ammotable8.htm

 

[bdgreen]

May be a 76 x 580mmR T19E1, see: http://iaaforum.org/forum3/viewtopic.php?f=8&t=12834&start=15 , midway down the page.

Brian

 

[HAZORD]

Some of the first Skysweeper cases were M26 76mm cases necked down 1mm. The U.S. uses push in primers, but the case I'm showing has a screw in primer.

There is a photo here on BOCN of my brass Skysweeper case:

http://www.bocn.co.uk/vbforum/threads/41836-37-X-219SR-T68-Vigilante?highlight=skysweeper

I checked an M26 case, and it indeed does have a push in primer. It looks like you might have one of the very first cases they swaged, before they started to bore and thread them for a screw-in primer. That's why someone obliterated the markings that said 76mm, with a ball peen hammer.