CCI Ammunition Hevi-Bismuth, 44 Special/44 Magnum, Bismuth Shot, 10 Round Box 3744B These centerfire handgun shotshells are loaded with the Catalyst lead-free primer and HEVI-Bismuth pellets. At 9.6 g/cc, the shot carries nearly the same density and downrange energy of lead but adheres to all non-toxic ammunition requirements.