Help identify this M1 Carbine ammo

[john@]

Got a bunch of this RD headstamped ammo from various years in the late 50's to early 60's. Anyone know where its from? Dominican Rep.?

 

[Brownjoe]

a quick google search suggests it is from

Armería F. A. San Cristóbal, San Cristóbal, Dominican Republic

 

[coldfire]

RD= dominican republic,•Armería F. A. San Cristóbal, San Cristóbal, Dominican Republic
•Curtis, Lewis E., III, 9mm Parabellum Headstamp and Case Type Guide, GIG Concepts Inc., San Antonio, Texas, 1996-2002; and cartridgecollectors.org
all i could find out

 

[maple_leaf_eh]

John at Marstar had this by the .30 ammo box. The box I bought had a mix of hangfires, pffts and bangs.

 

[john@]

Thanks for the info guys.

Now a follow up question, mixed in with the same bunch of .30 carbine there is some with no makers mark on the head stamp, any idea where this could have come from?

The dates are in the same range, but its dimensionally different so its possible its not Dominican.

Only has 30 M1 and the year

The space at the base is visibly pronounced (compared to the RD cartridge)

 

[CanAm]

I believe it also may be corrosive.