Developed in 1898, the Brenneke shotgun slug is still one of the most effective slug designs in use today. RIO’s Brenneke shotgun slugs are effective and accurate with improved penetration while reducing wear on your choke. This 12 gauge, 2-3/4” shell, 1-1/8-ounce slug travels at a speed of 1,410 fps has proved itself a reliable game stopper for years.