The reliability of knowing whether or not the primers are corrosive is a gamble with Tele. "We don't use corrosive primers" yet the nails of truth don't lie. As a general precaution treat all Berdan imported 7.62x39 and 5.45x39 as corrosive primed. Velocity was fine and accuracy was better than typical.
Macros: https://flic.kr/s/aHBqjCdwgJ
Various vendors have this: Tela themselves; https://www.telaimpex.com/ecomm/product/telaammo-usa-76239-ammunition-1000-rounds-case
Outdoor Unlimited: https://outdoorlimited.com/7-62x39mm-ammo/telaammo-7-62x39mm-ammunition-tela76239124-124-grain-steel-cased-full-metal-jacket-20-rounds/