Argh! Movie guns that don't need reloading in a gun fight, or magazine fed machineguns with rate of fire = cyclic rate (x hundred rounds per minute).
My favorite gripe is how full-auto weapons with a cyclic rate of, say, 720 rounds a minute are shown firing what seems like a total of 720 rounds for a minute from a single 30 shot box magazine without reloading. In real life that would be 30 rounds in a bit less than 3 seconds. It is almost as though the prop or Fx people read "cyclic rate" spex as "rate of fire".
The second favorite gripe is skipping magazine changes in handgun fights. (Sometimes the footage is actually shot, but the film editor cuts it out.) At least in "Way of the Gun" the bad guy fires his .45 1911 seven times, the slide locks back, and he reloads for the next seven rounds.
Or in "Licensed to Kill" (1965, aka "The 2nd Best Secret Agent in the Whole Wide World"), after running dry in a gun fight the hero had to quietly recharge a C96 with stripper clip. The next Monday at school, those of us who saw it gave it credit for actually showing someone reloading in a gun fight.
More germaine to the OP, are Colt SAA or Winchester 1873s showing up in movies set somewhere between Battle of the Alamo (1836) and end of the Civil War (1865).
Cool are movies set AFTER 1873 that show cap'n'ball revolvers still used (which is historically accurate).
