When Johnson is lying in the road pretending to be dead, he's in a straight line in the middle. Moments later, he's now off-road at about a 45-degree angle.
When the 2 bad guys threaten Fuzzy, at the ghost town, they chase him away with gunfire. During that sequence, 16 shots are fired. Neither of the bad guys are carrying more than one handgun, and while there were guns available, in those days, with larger cylinders, it's highly unlikely that the bad guys had them. Neither of them had time to reload, so it was impossible for more than 12 shots to be fired.