Best Slugs for Smoothbore Barrels for accuracy consider standard 1-ounce or heavier loads.
Recommended Choke, opt for a cylinder or improved cylinder choke, which are more open and prevent slug deformation, ensuring better accuracy. Tighter chokes can reduce performance.
Top Ammo choices look into
Federal Premium TruBall Rifled Slug (Low Recoil). Offers about 1.5-inch groups at 50 yards, with a centered slug for accuracy.
Don't forget the classic 00 Buckshot which is a highly effective choice for self-defense. For the Boss 25, high-velocity 00 buckshot is recommended to ensure reliable cycling.
Consider ammunition with a FlightControl wad, such as some Federal Premium buckshot loads. This technology helps produce tighter, more consistent shot patterns from a smoothbore barrel at longer distances.
Winchester Defender Segmented Slug breaks into three segments upon impact, increasing damage and reducing over-penetration.
Enthusiasts recommend using low-recoil slugs for better control and quick follow-up shots. Be cautious of over-penetration slugs can pass through walls, posing risks. Practice practice practice regularly to improve accuracy and handling skills.
Stay safe & Enjoy

Hello Steph, For 12-gauge self-defense, buckshot is the most recommended ammunition type due to its balance of stopping power, controlled spread, and effectiveness at close range.
The most commonly recommended and versatile option is #00 buckshot (also known as "double aught"), which typically contains 8 to 9 pellets, each weighing approximately 53.8 grains, delivering significant penetration and reliable stopping power.
This load is widely used by law enforcement and is considered the gold standard for home defense. budsgunshop.com/product_info.php/products_id/178777/rio+ammo+12+gauge+royal+buckshot+2.75+9+pellets+00-buck+5ct+box I personally wouldn't worry about a choke tube. Happy shooting!