Well, since this is the English standard, the caliber is the number of round bullets from the English pound of plumb. There were differences within the percents, as well as barrels for a metal hulzen, but now cartridges from foreign manufacturers are used without restrictions, and vice versa. In my opinion, only the 32-caliber differs from the American, but I don't know for sure.
Previously, the 16-gauge was widespread - or the German influence, or the old Russian army standard, but the 12th was a rarity, now the opposite is true.
We have our own barrels, the steel is not bad, some elite European manufacturers quietly use scrap of old Soviet arms.
Yes, there are similarities with rednecks, "hold my beer" and all that. Even by myself, I observe, although I am from a family of mathematicians, like Kensco (such an Internet character). But when I take something to the landfill, I bring more than I carried, and some other features of the Rednecks. However, my previous generations were all peasants, may be because of that.
But seriously speaking, there is one basic difference. Our land belonged to God and the community. Plots within the community were redistributed every 10-12 years according to the number of male taxpayers. In America, those who know something about Russian history identify Kulaks with American farmers, and this is completely wrong. Kulaks were village moneylenders and exploited the community, and in general they had as much land of their own as others. The sources of their wealth, as usual, were not disclosed. This is an old story, but social psychology has been formed for a long time.