Federal Premium HEAVYWEIGHT TSS 12 Gauge Ammo 12 Gauge, 3.5" 2-1/4 oz #9 Shott offers the following information; For nearly a century Federal Ammunition has put its focus on manufacturing quality products with cutting edge technology. This dedication to excellence has given Federal a competitive edge as an ammunition technology giant. Today the company is well known for producing high grade centerfire, rimfire, and shotshell ammunition that shooters everywhere know and trust. Its payload of No. 7 or 9 HEAVYWEIGHT Tungsten Super Shot provides the highest pellet counts possible—up to double those of lead No. 5 loads of the same weight. The tungsten-alloy material’s 18 gm/cc density is 22 percent higher than standard tungsten and 56 percent more than lead. The result is the most energy and highest velocities at extreme range. Its rear-braking FLITECONTROL FLEX™ wad performs flawlessly through ported and standard turkey chokes for the most consistent, deadly patterns possible.