FedArm 7.62x39mm - General Ammunition Discussion - International Ammunition Association Web Forum

What can you tell me about the origins of this 7.62x39mm cartridge? Appears to be re-manufactured with a confirmed M-43 projectile, but why the added cannelure? Soviet head stamps from 3, 17, and 60, early 1970’s dates. Sold in the US from a Gun Broker listing. Came in a 500 round box with no markings.

Wikipedia, 45% OFF

Wikipedia, 45% OFF

Wikipedia, 45% OFF

Help on Three 9x19mm Headstamps - General Ammunition Discussion - International Ammunition Association Web Forum

300 AAC Blackout headstamp list - General Ammunition Discussion - International Ammunition Association Web Forum

FedArm 7.62x39mm - General Ammunition Discussion - International Ammunition Association Web Forum

Help on Three 9x19mm Headstamps - General Ammunition Discussion - International Ammunition Association Web Forum

Wikipedia, 45% OFF

9mmP & a few 9mmM headstamps from ECRA - General Ammunition Discussion - International Ammunition Association Web Forum

9mmP & a few 9mmM headstamps from ECRA - General Ammunition Discussion - International Ammunition Association Web Forum

300 AAC Blackout headstamp list - General Ammunition Discussion - International Ammunition Association Web Forum

Help on Three 9x19mm Headstamps - General Ammunition Discussion - International Ammunition Association Web Forum

FedArm 7.62x39mm - General Ammunition Discussion - International Ammunition Association Web Forum