I have had a fair amount of success using ball and dummy drills to eliminate flinch while shooting groups for accuracy. I am finding that as I speed up my shooting it is creeping back in. For example, shooting a group of 5 shots in 2.5 seconds or so at seven yards or so at the -0 on an IDPA target, a couple of shots will go low. I realize that 5 shots in 2.5 seconds is not fast for a lot of people but for me it is about as fast as I can go and track the sights. The low shots are staying in the circle but they are several inches lower than where I was aiming. Any suggesstions on eliminating flinch while speeding up? It doesn't seem like ball and dummy would work very well at faster speeds.