Agree with others, loading a different ammo as a "low ammo warning" probably won't be as effective as you think. I've never once heard a professional pistol instructor recommend this even as a technique, and I'll bet there is a reason for that.
My advice would be to try it with a dynamic drill and see how much of the time you can actually tell while switching targets, moving, shooting from behind cover (braced?) etc.
"We must, indeed, all hang together, or assuredly we shall all hang separately." -Benjamin Franklin
Bookmarks