Like most things from Russian industries, QC is a secondary consideration. The gunpowder is dirty and smoky and leaves the shooter smelling like, well, he went to the range and the weapon needs to be cleaned carefully.
But the cans are air- and water-tight and can be buried if necessary (a tactical consideration). It's also very cheap, about twenty cents per round, okay for a third-world country, great for shooters in the US who want to practice putting holes in paper targets.
The cans are also pretty heavy, 25+ pounds. My FedEx guy hates me.
