 These high energy .500 S&W Magnum rounds can kill extremely large Brown bear, Polar bear and even the African Big Five.The Model 500 can fire a bullet weighing 350 gr (22.7 g; 0.8 oz) at 1,975 feet per second (602 m/s) generating a muzzle energy of over .Commercial loadings are available in bullet weights ranging from 275 gr to 700 gr.