Reid Henrichs of Valor Ridge offers us a very simple but effective sight picture drill that involves engaging a target with a carbine, then transitioning to a pistol and reengaging the target again.

Rifles and pistols typically have very different sighting systems and accompanying point of aim/point of impact shifts that shooters need to drill with and remember. Mastering this drill will tell you the adjustments you need to make when transitioning from one weapon to the other.