"Such as 91/30, M44, M38, 91/59, M39.... all of which are Mosin Nagants...Why are they always called a Mosin?"
I think you answered your own question. They're all the same design, same caliber and same operating procedure. Just with different barrels and sights (or bayonets).
"I love it when folks talk about the .30 ought 6. I ask them what year the cartridge was accepted. Most have no clue. 1906 you moron!"
Would you rather them be anti-gunners? At least they take an interest. This kind of ivory-tower attitude does nothing but turn new people like me off of guns and gun owners. It makes you sound like a hippy going on about their Prius

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"I always love that the reason WW1 was won by the Allied powers is that the 03 was better than the 98. The 03 is a copy that the U.S. paid a license fee to Germany to produce!"
No, a gun design the Springfield Armory stole from the Germans and got sued for didn't win the war. First off, there were more M1917s fielded, so the argument is moot. Secondly, we had superior tactics and fresh troops ready to go at a time when the German people were eating rats and shoes for lack of regular food.
BTW, I think Gen. Patton said it best with "Now I want you to remember that no bastard ever won a war by dying for his country."