Fort Scott TUI (Tumble Upon Impact) Ammo features a solid copper bullet that penetrates like a standard FMJ projectile-but tumbles end-over-end when it comes into contact with tissue, creating a devastating wound channel. And unlike hollow points that can bounce off of tough hide, this Solid Copper Spun bullet cuts right through thick skin to cause maximum damage. So you get all of the benefits of a hollow point AND a full metal jacket round, in one. Fort Scott Ammo is made in America in small batches to deliver a finished product of the highest quality. Every bullet is machined from solid copper on a CNC lathe to extremely tight tolerances. These are subsonic rounds, so they travel below the speed of sound. When used through a rifle equipped with a suppressor, they're extremely quiet, mild-recoiling and fun to shoot-while still delivering that distinctive tumbling action. We don't find many new ammo manufacturers that impress us, but Fort Scott TUI is impressive stuff that does exactly what it says. Plus, it's 100% lead-free, so you can use it in places where lead is forbidden. Muzzle velocity is tested in a 16 inch barrel with 1:3 inch twist. Order today!