500 S&W 600gr LFNGC Hard Cast – 1050 fps – 20 RoundsSteinel Ammunition . 500 S&W Magnum 600 grain hard cast load represents the absolute pinnacle of deep penetration and bone smashing authority in the worlds most powerful production revolver cartridge. Each round is loaded with a 600 grain Lead Flat Nose Gas Check (LFNGC) hard cast bullet, engineered with extremely high hardness and a gas check to eliminate leading while delivering unmatched sectional density and straight line penetration through the