What are its intended use(s)?
Pocket gun usually means for concealed carry, self defense.
If it's a self-defense weapon, that would preclude a pocket gun. A gun that might be used to save your life ought to be up to the task. Bigger is always better.
I'd suspect that a .38 Special would be minimum.
Pocket guns can't be used for self defense.
I learn something new everyday.
Travis
When a bad guy who wants to kill you starts shooting at you, you'll learn to clean crap out of your pants with your hands.
Maybe a trip to Chicago will accord you practical knowledge you need. You can watch those Stingers penetrate heavy winter coats.