Has he shot other ammo previously with success? One thing to remember about Communist Bloc rifles that have been sitting in some warehouse for years is that "new" and "clean" don't necessarily mean ready to shoot. A field strip and full cleaning before embarking on the gun's new life is always a good idea. I learned this the hard way when I had some failures using DAG surplus ammo in my Saiga without doing a thorough cleaning since I figured the gun was brand new and wouldn't need it.
Mauser Werke, Schmidt-Rubin, Colt, Walther, HK, Weatherby, Browning, Ruger, Beretta, Savage, Bushmaster, Marlin, Mossberg, Remington, PTR, Saiga, S&W, Sig Sauer....a few friends of mine