My questions are about what is the most effective ammo to carry in 3 short barrel guns which I carry regularly. Not all 3 at once. I am brand new to this site so please excuse me if this has been thoroughly covered already. The guns are: 1. Colt Cobra 38+P 2. Ruger LC9s 3. Sig 238. My concern is how the bullet might perform considering all guns have very short barrels. Over the years, I have seen many articles about bullet performance but most stats seem to be derived using longer barrels. I have read other articles which state that a bullet with a great reputation might perform poorly when shot from a short barrel pistol as it does not attain enough velocity to perform as designed. I am also pondering the question of light bullet with faster speed vs. big and slow. Any thoughts would be greatly appreciated and if anyone knows any articles on these questions I would like to reference them. Thank you.