After the T-1000 blows up the huge semi truck, Arnold and John ride in front of the flame. After they are a safe distance away, they stop and look back. Arnold cocks his shotgun, thinking that maybe the T-1000 is going to walk right out. He doesnt, so Arnold puts his gun away and drives off. Well in the next scene, when John orders Arnold to pull over, Arnold gets his shotgun back out to reload. The first thing that flies out of the gun is an empty shell. Huh? Arnold never uses the shell, he just cocks the gun and drives away. Tsk, tsk, tsk.