I carry a S&W M&P 40 Elite. 4.25" barrel. The first 2 rounds are Glasser Safety Slugs. The rest are 185gr. Hornady CD. The Glasser's won't over penetrate. After that. I don't care.
Massad Ayoob is no doubt one of the preeminent experts on legal on use of force. I wouldn't seek to contradict his advice as though I'm a greater authority.In MAs Ayoob's LFI class, he suggested we ask a local police officer about the ammunition the department issues their officers. Why? Well, if you ever have to defend yourself, and have to testify and are asked why you chose a specific ammunition, you can testify that you asked your local police department, and if the ammunition was good enough for them it was good enough for you...