Need help to ID some 7.62x25 ammo.

[MVP]

For the brass case copper washed steel jacket and lead core surplus 7.62x25

Headstamp 3-46
"пистолетные патроны калибра 7,62 мм 70 шт." (7.62 mm pistol cartridges 70 pcs.) on box

"7,62 пгп" on crate.

Berdan primer

Entire cartridge weight 10.8g, the projectile weight 5.5g, the case weight 4.6g and the powder weight 0.7g (I don't have an analytical balance so the weighs are approximately) .

The projectile has a lead encasing at the bottom.