I'd like to know your source of information, please.
I can cite personal experience. I have seen lots of miscreant shot with 357 magnums. Before the 125 was the king of the hill, the 357 was known in LE circles as quite a penetrator. For my years in the Fort Worth, Texas PD we were issued 158 grn Remington 357 magnums. Every one of the shootings I saw were completely ventilated.