To my way of thinking, there are 4 kinds of guns: pistols; ar/ak; 308/7mm mag/300 win mag; and shotguns. I have discovered a variety of opinions online about buying powder for reloading. Some people would advocate buying 6 or more kinds of powder and mixing the exact "cocktail" for each round. On the other end, I have read of people suggesting the use of a powder that is usually used for shotgun shells for all rounds. Is there a happy medium? My home safety weapons will always keep store-bought in them when carried, but will use reload for practice. Any ideas on this?