I am not quite as concerned with over penetration as many people. When considering the hit percentages of LEOs ( I assume civilian as well) in gunfights, being aware of targets background is more import although not always possible.
This is just a quick scan of the internet for statistics but was close to my initial guess (12-15%) but at least 80% of their bullets went on with 100% energy.
https://internationalfreepress.com/2018 ... m-teachers
I shoot WFN solids and expanding FMJ along with the premium Gold dots and HSTs. Just make sure they are reliable and hit where they are supposed to. Best of luck.