Bioammo Rex Lead 12 Gauge 2-3/4in #8 1oz Target Shotshells - 25 Rounds - Specially designed for hunters and clay shooters looking for a superior quality cartridge and with maximum efficiency in terms of speed and penetration. Bioammo cases and wads are made with 100% compostable and biodegradable biopolymers that do not leave toxic residues in nature.