The Fort Scott Munitions Sub-Munition .300 Blackout 190gr TUI load is a box of 20 rounds of non-lead solid copper spun SCS ammunition. Fort Scott builds this load around a CNC-machined bullet with its patented Tumble Upon Impact design. Rather than relying on expansion, the bullet is designed to tumble end over end when it meets water-based tissue. The listed velocity is 960 fps through a 16-inch test barrel. Fort Scott markets it for hunting, match shooting and self-defense.

Key Specifications

• The chambering is .300 Blackout, the designation Fort Scott lists for this load, so match it to the marking on your barrel.
• Bullet weight is 190 grains, the weight Fort Scott lists for this load.
• The bullet is a solid copper spun SCS Tumble Upon Impact (TUI) design, machined on a CNC lathe.
• The bullet is non-lead copper, so the load is a fit where lead-free ammunition is wanted.
• The TUI design is built to tumble end over end on contact with water-based tissue, creating a larger wound channel.
• Fort Scott lists a velocity of 960 fps from a 16-inch test barrel, the reference figure for this load.
• The test barrel has a 1:7.5 twist, a reference point when you compare this load with your own rifling.
• Cartridge overall length is 2.225 inches, a figure to check against your magazine and chamber.
• The listed test load uses 10.7 grains of Accurate 1680 powder, the charge behind the velocity figure.
• Each box holds 20 rounds, a pack size that suits range testing and carry loads.

Frequently Asked Questions

Does this load contain lead? No. Fort Scott lists the bullet as non-lead solid copper.

How many rounds are in the box? The box holds 20 rounds.

Does Fort Scott give any prep or handling guidance for this ammunition? Fort Scott recommends cleaning your barrel thoroughly before shooting solid copper or brass if you have been shooting other ammunition, since a clean barrel improves accuracy and performance with solid monolithic ammunition. It also notes that repeatedly cycling an unfired cartridge can cause the projectile crimp to fail and the bullet to loosen, more often with larger monolithic projectiles. For AR10 platforms that are not mil-spec, Fort Scott recommends polishing the feed ramp before use and checking the headspace of your firearm.

Buy the .300 Blackout 190gr Sub-Munition TUI Solid Copper Ammunition

This 20-round box is a straightforward way to try Fort Scott’s solid-projectile design. Browse the full Fort Scott Munitions lineup in rifle ammunition and order from our Lubbock, Texas gun shop for fast, insured shipping.