I find it very useful in live fire to shoot small portions of stages I build. Time yourself between two shooting positions _without_ a reload. Shoot the last half of one and the first half of the second position. Work this number down, have your gun extended and ready to shoot as you enter the position. Only then do you add the reload. The reload needs to be done by the time you need to extend the revolver, this is earlier than when your feet get to the position. If you're not getting the reload done before this point, then you need to prioritize the reload over the movement. Not all distances require you to prioritize the reload and you need to figure this out on your practice. On long runs we need to prioritize movement, just like the bottom feeders.
While you're moving between positions with and without reloads, take note of the time differences. For example, I know that my revolver reload costs me .4 seconds across an 8 foot wall. These things are useful information to have during stage planning and breakdown.