It also makes a differences if your are watching an "Edited for Television"
version, where they have to cut out about 40% of the movie to fit in all of the commercials. I have noticed in other movies, where they have cut out extremely important parts of the story line.

But usually, in "Tombstone", at the OK corral shootout, you can still see Val Kilmer as Doc Holiday, fire 3 quick shots from his DOUBLE BARREL shotgun!