Hevi-Shot Hevi-Hammer 20 Gauge 2-3/4in #3 7/8oz Upland Shotshells - 25 Rounds - HEVI-Hammer Upland & Dove. Bird fields are where nontoxic HEVI-Hammer performs at its peak. The density of bismuth pellets provides tighter patterns, faster speeds, and 50% more knockdown power. With HEVI-Hammer, hunters can shoot one shot size smaller than steel to get the same lethality. Mixed bismuth and steel pellets Hotter primer Clean burning popellant