Sterile lab testing in ballistic gelatin is great, but the ultimate laboratory is the street. Here are the loads that seem to be doing best there, input written in blood from gunfights police departments have experienced with defensive ammunition.
The idea behind the +P is to add enough energy to reliably deliver an expanded bullet deep enough to do its job. It doesn’t have to be a lot of extra energy - it just has to be enough. Here's what you need to know.