NEED HELP to ID an unusual 40mm case

[apfsds]

A collector friend sent me these two photos to post on BOCN looking for any possible information on it. Any info would be greatly appreciated.


Jason

 

[Slick]

No clue on specifics but maybe have him check to see if it may be cut down. A thick rim, saw marks,etc on the mouth of the case would be a clue. Certainly not of the L60/L70 variety.

 

[apfsds]

THANKS BIG TIME, RICK!

I asked the owner if it was cut down and he said that it was not and that he has sen 3 of these over the years but known could ever ID them.

Jason

 

[bdgreen]

Jason,

From BIG BORE AMMUNITION, R. Hawkinson, 2012; page 50

40 x 176mmR, rim dia. 53.6mm, aluminum case, USA. "40mm XM Exp, Project 6005, 1964, 16mm Screw Primer, Gas Delivery System."

Brian

 

[apfsds]

Thanks big time, Brian! I tried to find information about "Project 6005" with no luck. Grateful for your help. I'll pass it along.

Jason

 

[apfsds]

Brian, I can't find my copy of his book. Is there a photo with its projectile?

Jason

 

[highlandotter]

No pictures, unfortunately.