That video was shocking. Seems to be cheaply made through out.
Regarding the No-Go failure, it was clear that he used a CIP gauge. I know, per Century itself, that the VZ2008 is chambered with SAAMI specs instead of CIP. Could the RAS47, being Century and US-made, also be chambered in SAAMI? Would that make a difference? I don't know as I don't have adequate grasp of the differences between the shoulder angles and lengths of the two gauges.
To make things even more confusing, apparently Chinese 7.62x39 (SKS) chambers have slightly different shapes, angles, and lengths to them, and East German gauges also have slight differences from CIP and SAAMI gauges.
I'm very relieved that the VZ2008 is largely made from surplus parts. The parts made by Century all seem to be either easily switched out for better (slant brake, gas piston), out-sourced (barrel, receiver), or overall well-made (sear, disconnector). The cheap, pot-metal type moldings used for the front sight ears and the bad wood on the RAS47 are flat-out embarrassments.