Description
The Brenneke KO 20 GA Slug has earned a loyal following by pairing solid deer-hunting performance with a price that makes it easy to practice. Brenneke uses an improved Foster design for the KO line, and in 20 gauge it drives a 3/4 oz (328 grain) lead slug at a rated 1550 feet per second. That produces roughly 1770 foot-pounds of muzzle energy from a standard 2-3/4 inch shell. A specially designed wad helps generate that high velocity and a flat trajectory, and the load is equally at home in rifled or smoothbore barrels.

Why Hunters Choose This 20 Gauge Slug
Improved foster style slug made of solid lead for strong knockdown power
Fits any 20 gauge with a 2-3/4 inch or longer chamber
Shoots well from both rifled and smoothbore barrels
Angled ribs on the lead point help the slug pass smoothly through chokes
Around 58 percent more frontal area than standard .50 caliber slugs, per Brenneke
Brenneke KO 20 GA Slug Performance
Rated muzzle velocity of 1550 fps
About 1770 ft-lbs of muzzle energy
Flat trajectory for medium range shots
Expansion up to about .9 inch with deep penetration
Shot placement still matters more than raw power. A set of rifle-style sights or a low-power optic on a slug gun makes precise aiming much easier than a single bead, and a steady rest at the range will show what your barrel and this load can really do. Once you know your holdover at longer distances, you can take ethical shots with confidence.
If you are new to hunting with slugs, start at 25 yards to confirm the gun is on paper before moving back. Clean the bore between range sessions for the most consistent results, and let the barrel cool between strings of shots so heat does not shift your groups.
Specifications
- Brand: Brenneke
- Model: K.O.
- Gauge: 20
- Shell Length: 2-3/4 inch
- Slug Weight: 3/4 oz (21 g / 328 gr)
- Velocity: 1550 fps
- Energy: 1770 ft-lbs
- Brenneke Item: SL-202KO
- Quantity: 5 rounds
- UPC: 4030128200989
Affordable Deer Slug Performance
Many hunters skip range time with slugs because premium loads cost so much per round. The KO line was built to change that. Because the price is reasonable, you can shoot enough to learn exactly where the slug prints at 25, 50 and 75 yards, and that practice usually matters more in the field than any small difference in ballistics.
The 20 gauge version has become so popular that it outsells several of the 12 gauge Brenneke loads. It retains good velocity and energy across typical woods and field distances, which makes it a sensible choice as medium range deer ammo for stands, ground blinds and drives. Brenneke has made slugs in Germany since 1898, and that experience shows in how consistently these rounds group.
Deer and hog hunters who carry a 20 gauge pump, semi-auto or single-shot will get the most from this load, especially in shotgun-only zones. It is a good match for younger or smaller-framed hunters who want manageable recoil. Sight in with the same lot you plan to hunt with and confirm point of impact before the season. Follow all federal, state and local hunting regulations when using this ammunition.
Because a foster style slug carries most of its weight toward the front, it flies nose-first from a smooth bore much like a badminton shuttlecock, which is why no rifling is needed for good accuracy.
Store these shells in a cool, dry place in the original box so the lot number stays with the ammunition, and keep slugs separate from birdshot in your pack so there is no mix-up in the field.
Browse the MAG5 Firearms ammunition selection for more shotgun loads, and visit Brenneke USA for full product details.








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