Originally Posted by ttpete
I have one of those, but in .357. Herter's had a proprietary cartridge called the .401 Powermag, and they chambered for that one as well.
I'll bet that .357 is nice, too. If I could find one of those I might buy it. The .44 Herters is a nice handgun. Very well built and accurate.
Lee Martin's article on these guns is the classic reference source: