And forget handguns not stopping people, here they are talking about the M1 Carbine, more powerful than a .357 Magnum.
"the main reason my men lost confidence in the carbine was because they would put a bullet right in a Chi-Com’s chest at 25 yards range, and he wouldn’t stop. This happened to me. The bullet struck home; the man simply winced and kept on coming. There were about half a dozen of my men who made this same complaint; some of them swore they had fired three or four times, hit the man each time, and still not stopped him."
So yeah, you have a gun and you can shoot someone charging you with a sword(some of you). It still doesn't always stop them.