I believe the concern with using handloaded ammunition for self defence is a bit overated. It probably has it's roots in a series of (I think it was GUNS) magazine articles, written by a gentleman whose name is Massad Ayoob, back in the 70s. He was a police detective in New York City, and had been present in court proceedings where exuberant prosecuting attoneys had caused things to go terribly wrong for people who had used deadly force in a self defense situation. As a result, he wrote a column called Ayoob For The Defense, in which he attempted to give advice on the dos, don'ts, and possible pitfalls pertaining to using guns for self defense. In one of his articles, he recomended not using handloads, because of an instance where a prosecuter had been successful getting charges upgraded to murder, and convinced the jury to render a guilty verdict, on the grounds the defendant had assembled his rounds for the express purpose of having them kill, instead of wound, whoever they contacted. Ayoob has gone on to produce books and vidios on firearm topics.