 Other alternatives to lead shotshells than bismuth also exist that are legal for hunting waterfowl, and which are safe for use with older chokes.Within recent years, several companies have created "heavier than lead" non-toxic shot out of tungsten, bismuth, or other elements with a density similar to or greater than lead, and with a shot softness comparable to lead.These shells provide more consistent patterns than steel shot and provide greater range than steel shot.