Since my last post, I have done much gooooooooogle searching for 7.63x39 ammo or reloading dies. None to be found. I suspect no such caliber exists. Misprints for 7.62x39 abound. I am a Viet Nam vet. (1st Cavalry Div 11B CIB 1970-71) I heard rumors of ammo interchangeability at the time, and later, but saw no examples of same. Sounds like just another myth about Viet Nam.
“7.62x39”
“7.63x39”
What are you shooting? Do you have a pre-70s AK47?
Shoulda been used in Nam. It was standard in Soviet AK after WW2 up into the 70s.
..or am I missing the whole conversation?