Here’s a detailed analysis of a technique for moving out-of and in-to a shooting position, most often done using shooting boxes in USPSA. The idea is simple, you want to be moving out of a shooting position as quickly as you can if your position is previously static, the fastest would be to start your move while you’re engaging the last target. Not recommended if the last target is a steel plate or popper. That said, don’t make your last target a steel target.
As you enter a new position, you want to have the gun up and ready and your eyes on target before you get into the position, then fire your first shot as early as legally possible. Usually this means one foot in the shooting box and the other off the ground. Which foot I hear you ask, doesn’t really matter. You’ve learned to walk since you were a toddler, your body will know which is better.
This technique is tricky as it requires shooting while moving and you’d have to make sure your knees are bent and springy so that it’ll absorb the force of starting & stopping to ensure your sights are kept as still as possible.
Now go out and try it out at your next match! It worked well for me.