How about the "Case of the Never-Empty Six Gun???"
In the movie Tombstone, during the scene at the OK Corral, Doc Holiday fires 3 shots from a double-barrel shotgun w/o re-loading, and then later is seen ducking and firing both revolvers at Ike Clanton. He fires more than 6 shots from each gun!!!
Or how about in Heat, where Pacino and DeNiro shoot it out after the bank robbery, with ALL SORTS of innocent 3rd parties running for cover?
Oh, and another classic, in Terminator 2: John Connor hands Arnie a 1911, with the hammer cocked. Then, in another angle, when Arnie is holstering it, the hammer is NOT cocked. Switch views once again, and the hammer is again cocked!!!
BOOOOOOO Hollywood.... but what can you expect from a bunch of anti-gun, uneducated Smegheads???? (ie., a semi-auto rifle is a machine gun)
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"...What will you do without freedom? Will you fight?... Fight, and you may die, run and you'll live, at least a while. And dying, many years from now, would you be willing to trade all the days from this day to that, for just one chance, to tell our enemies, that they may take our lives, but they'll never take our FREEDOM!!!"