Lets say you bought a revolver, (you pick a cal.) You go to the range and shoot. After your range sesson you think I do not need that much power, just to plink and shoot targets. However, you like the cal. and the gun. You get out the reloading books and read them all. You are looking for a light load that you can plink and shoot paper. Now you are confused. How does one know or pick a light load?