I’ve not used the Vulcan but it’s a cool concept. The big thing when moving to a dot that helped me is before pressing out coming up higher with the pistol almost like your looking down the sights as you press out, also don’t panic if you don’t see the dot the second your there your brain says it’s an eternity but the timer will show it’s not. When coming out with irons you kinda reference the irons a little more and since you don’t have that with the dot you need to be a little cleaner in the presentation. I find my first shot speed is about the same with a dot as irons and that my follow up shots are faster and more accurate with a dot. It make dry fire more rewarding with a good visual reference and over all shooting a dot has made me a better irons shooter. I can shoot irons more accurately with a hard target focus at farther ranges now which is very useful I find in force on force classes.