RE: Power ball and Glaser safety slugs
The Glaser safety slugs are basically bird shot that has been compressed so tightly that they are almost solid. When they hit soft tissue they give enough penetration to reach the vitals of an intruder but at the same time fragment and dump energy everyhere and create a massive wound just behind the ribs.
Also when they strike solid objects such as a wall they decentigrate very rapidly and greatly reduce the chances of riccocet and penetration through numerous walls.
Swamp, did the Glasers show adequate penetration inot the phone books?