Try to have a more specific plan for how you will run each stage. If you suspect that you'll probably need more shots than the minimum expected for some part of a stage, then plan to reload on your way from one shooting position to the next.
Attempt to figure out even more details. During the briefing, schedule in your mind which target you are going to shoot first when reaching each window. I see that other times you shoot left to right, and other times you shoot right to left. Being right-handed, I have experienced that one will shoot better if enganging targets from right to left -and particularly from lower to top- because the eye will be quicker to get to the next target. Don't just get to the window and shoot what you see. Have the sequence planned beforehand.