Yea after I asked I ran across a pic that pretty well let me figure that was how it worked. Neverseen one like that in person though, interesting.
Loyd
I figure it's kinda like anything else, it may just make me feel better, and in most cases it might not stop a charge, it can and has (posted on the web somewhere of a one shot brown bear charge stop with a 44), but I'm sure that is the exception and not the rule.
I saw an interesting show the other day, the Easton bowhunting show, and these guys were floating down a river in AK, bowhunting for brownies, when the boat they were in rounded a bend and suprised three cubs. Sure enough here comes momma charging out in knee deep water, easily able to get the guys in the boat.
She was hell bent on getting to them and the guide in the boat fired a round off from his handgun into the water in front of her, and that turned her around. She was 5-8 yds from the boat when he shot.
Even a deterrent like that is better than nothing.
BTW, no idea what caliber it was, but didn't matter, cause it was most likely the muzzle blast and noise that turned her.