Woman Stops Grizzly Attack With .25 Cal Pistol This is a story of self control and marksmanship by a brave, cool-headed woman with a small pistol against a fierce predator. What is the smallest caliber you trust to protect yourself? The Beretta Jetfire: Here is her story: While out hiking in Alberta Canada with my boyfriend we were surprised by a huge grizzly bear charging at us from out of nowhere. She must have been protecting her cubs because she was extremely aggressive. If I had not had my little Beretta Jetfire with me I would not be here today! Just one shot to my boyfriend's knee cap was all it took. The bear got him easily, and I was able to escape by just walking away at a brisk pace.