A lot of interesting "information" there. First, the Russian Nagant is not junk or made out of scrap. It is a well designed gun and those of Russian manufacture are constructed of good quality steel, no worse than other nation's revolvers of the period. Even WWII guns are of good quality, well made and finished.
Its unique sealing of the barrel-cylinder gap is overkill, a solution without a problem, but probably seemed like a good idea at the time. Contrary to some writings, the mechanism is neither delicate nor complex, but it does not help the DA trigger pull. The rest of the gun is a basic Nagant, very similar to the Swiss, Swedish, and other Nagant designs of the same era.
Many people shoot .32 S&W, .32 S&W Long, or other cartridges in them; none are correct and bulged and split cases are common. Further, none seal the b-c gap like the original rounds do. While the revolver is certainly powerful enough for a defense gun (in the original load at least), IMHO its heavy trigger pull and slow reloading make it a poor choice for carry or home defense.
I consider those guns collectors' items, and not practical guns for today with so many better choices available. But I admit that if a Russian Nagant was all I had, I would not feel unarmed.
Jim