A slug turns a smooth-bore shotgun into a short-range rifle. One big projectile replaces a cloud of shot. That makes 12 gauge slugs the go-to load for deer in shotgun-only zones, for bear country, and for some home-defense setups. The trick is matching the slug to your barrel. Get that right and the rest is easy.
This guide covers the three main slug designs, what they weigh, which chokes work, and how to read the velocity and energy numbers on the box. Every figure below comes from the loads we stock at Bulk Ammo Vault.
Rifled slugs, sabot slugs and attached-wad slugs
Walk down the shotgun aisle and you’ll see three types of slug. They look alike in the box. They act very differently in the barrel.
Rifled (Foster-type) slugs
A rifled slug is a soft lead slug with a hollow base and angled ribs on the outside. The “rifling” on the slug doesn’t make it spin much. The hollow base puts the weight up front, so it flies nose-first like a badminton birdie. Rifled slugs are built for smooth-bore barrels. Most also work in rifled barrels, but they won’t gain much accuracy there.
Examples on our shelves include the Remington Slugger 1 oz rifled slug, the Winchester Super X 1 oz rifled slug and the Norma Whitetail 1 oz slug in a 25-round box.
Sabot slugs
A sabot slug is a smaller, bullet-like slug held in a plastic sleeve. The sleeve grips the rifling in a rifled barrel and spins the slug. It falls away at the muzzle. Sabots are made for fully rifled barrels or rifled choke tubes. In a smooth bore they lose the spin that makes them accurate. Check the box: most say “rifled bore” right on the label.
The Hornady SST 300 grain sabot and the Federal Freight Train 300 grain copper sabot are good examples.
Attached-wad slugs
Brenneke slugs carry a wad fixed to the base of the slug. The wad works like a tail and keeps the slug stable. These are made for rifled or smooth bores. The Brenneke Classic Magnum 1-1/8 oz slug is a classic of the type.
What caliber is a 12 gauge slug, and how much does it weigh?
A 12 gauge bore is about .73 inch across. A full-bore rifled slug is close to that size, so people often call it a .73 caliber projectile. Sabot slugs are smaller because the plastic sleeve takes up room. That’s why a sabot slug can be shaped like a pistol or rifle bullet.
Weight is listed two ways. Rifled slugs use ounces. Sabots usually use grains. One ounce is 437.5 grains. So a 1 oz rifled slug weighs about 437 grains, and a 7/8 oz slug about 383 grains. Our 12 gauge slugs run from 7/8 oz up to 1-3/8 oz in the Brenneke Black Magic Magnum. Sabot loads run from 300 to 438 grains.
Sabot slug velocity and energy
Makers publish energy for most sabot slugs because the slug weight is listed in grains. Here is what our sabot loads list. Velocity is at the muzzle, from the maker’s test barrel.
| Load | Shell | Payload | Velocity | Energy |
|---|---|---|---|---|
| Hornady SST Slug 12 Gauge 300 Grain Sabot | 2-3/4 in. | 300 gr | 2,000 fps | 2,664 ft-lbs |
| Federal Freight Train Slug 12 Gauge 3 in. 300 Grain Copper Sabot | 3 in. | 300 gr | 2,000 fps | 2,664 ft-lbs |
| Hornady Superformance 12 Gauge Slug 300 Grain Polymer Tip Sabot | 2-3/4 in. | 300 gr | 1,950 fps | 2,533 ft-lbs |
| Hornady American Whitetail 12 Gauge Sabot Slug 325 Grain | 2-3/4 in. | 325 gr | 1,825 fps | 2,403 ft-lbs |
| Remington AccuTip 12 Gauge 2-3/4 in. 385 Grain Sabot Slug | 2-3/4 in. | 385 gr | 1,850 fps | 2,925 ft-lbs |
| Remington AccuTip 3 Inch 12 Gauge 385 Grain Sabot Slug | 3 in. | 385 gr | 1,900 fps | 3,086 ft-lbs |
| Barnes 12 Gauge Slug VOR-TX 3 in. 438 Grain Sabot | 3 in. | 438 gr | 1,550 fps | 2,337 ft-lbs |
| Hornady Custom Lite Slug 12 Gauge 300 Grain Sabot | 2-3/4 in. | 300 gr | 1,575 fps | 1,652 ft-lbs |
Two quick reads from that table. First, a heavier slug at lower speed can carry more energy. The 385 grain Remington AccuTip lists 2,925 ft-lbs at 1,850 fps. The 300 grain Hornady SST lists 2,664 ft-lbs at 2,000 fps. Second, light-recoil loads give up energy on purpose. The Hornady Custom Lite lists 1,652 ft-lbs, which many shooters accept for a softer push.
Rifled slug velocity
Rifled slug boxes usually print velocity but not energy. Here is what our rifled and attached-wad loads list.
| Load | Shell | Payload | Velocity |
|---|---|---|---|
| Remington Slugger 12 Gauge 2-3/4 in. 1 oz Rifled Slug | 2-3/4 in. | 1 oz | 1,560 fps |
| Remington Slugger 7/8 oz 12 Gauge 2-3/4 in. Rifled Slug | 2-3/4 in. | 7/8 oz | 1,800 fps |
| Remington Slugger High Velocity 12 Gauge 1 oz Rifled Slug | 2-3/4 in. | 1 oz | 1,680 fps |
| Winchester Super X Slug 12 Gauge 2-3/4 in. 1 oz Rifled | 2-3/4 in. | 1 oz | 1,600 fps |
| Federal Power-Shok 12 Gauge Slug 1 oz Hollow Point Rifled | 2-3/4 in. | 1 oz | 1,610 fps |
| Federal TruBall Slug 12 Gauge 2-3/4 in. 1 oz Hollow Point | 2-3/4 in. | 1 oz | 1,600 fps |
| Brenneke Classic Magnum 12 Gauge 2-3/4 in. 1-1/8 oz Slug | 2-3/4 in. | 1-1/8 oz | 1,510 fps |
| Brenneke Black Magic Magnum 12 Gauge 3 in. 1-3/8 oz Slug | 3 in. | 1-3/8 oz | 1,502 fps |
| Norma Whitetail Slug 12 Gauge 1 oz Rifled Lead | 2-3/4 in. | 1 oz | 1,410 fps |
| Winchester PDX1 Slug 12 Gauge Defender 1 oz Segmenting | 2-3/4 in. | 1 oz | 1,600 fps |
Shorter shells and reduced-recoil loads sit lower. The Federal Shorty 1-3/4 in. slug lists 1,200 fps. The Fiocchi Low Recoil 1 oz slug lists 1,150 fps. Those trade speed for comfort, which helps new shooters and quick follow-up shots.
What choke should you use for slugs?
This is one of the most searched slug questions, and for good reason. A tight choke and a full-bore slug don’t mix well.
- Rifled slugs in a smooth bore: cylinder or improved cylinder is the safe pick. Many gun makers warn against firing slugs through tight or extra-full turkey chokes.
- Sabot slugs: use a fully rifled barrel or a rifled choke tube.
- Attached-wad slugs: follow the box and your gun’s manual.
Your shotgun’s manual has the final word. If it says no slugs through a given choke, believe it.
Picking 12 gauge slugs by job
Deer
With a rifled barrel, a sabot slug will usually group tighter at longer range. With a smooth bore, pick a rifled or attached-wad slug and zero your sights with that exact load. Lead-free options exist if your area calls for them, such as the Winchester Deer Season XP Copper Impact and the Winchester Super-X Lead Free zinc core slug.
Bear and large game
Some hunters and guides carry heavy hard slugs in bear country. Heavier attached-wad slugs like the Brenneke Special Forces 1-1/4 oz are one option. Whether a slug is legal or wise for bear depends on your state’s rules and your skill. Practice with the load first.
Home defense
Slugs pass through walls easily. Know what is behind every wall in your home before you load one. Some owners prefer buckshot for that reason; see our 12 gauge buckshot guide. Defense-labeled slugs include the Fiocchi Aero High Velocity slug and the Winchester PDX1 segmenting slug. Laws on home defense vary, so check your state and local rules.
Less-lethal and wildlife control
Rubber slugs like the Lightfield Home Defender 130 grain list 600 fps and 103 ft-lbs. They are less lethal, not non-lethal. They can still cause serious injury. Use them only where your local laws allow.
How far does a 12 gauge slug travel?
Much farther than most people think. Your effective hunting range is short, but a slug fired at an upward angle can fly a long way and still carry enough energy to hurt someone. Always shoot with a solid backstop. Never fire at a target on a ridge line. A shotgun-only zone does not make a slug safe to fire without a backstop.
Shop 12 gauge slugs
Browse every rifled, sabot and less-lethal load in our 12 gauge slug category. Want the smaller bore? Read the 20 gauge slug guide next. Pick one load, zero with it, and stick with it all season.
Frequently Asked Questions
What caliber is a 12 gauge slug?
A full-bore 12 gauge slug is close to the bore size, about .73 inch, so it is often called a .73 caliber projectile. Sabot slugs are smaller because a plastic sleeve fills the gap between the slug and the bore. That lets the sabot slug be shaped more like a bullet.
How many grains is a 12 gauge slug?
One ounce equals 437.5 grains, so a 1 oz rifled slug weighs about 437 grains. Lighter 7/8 oz slugs weigh about 383 grains. Sabot slugs are listed in grains directly; the loads in our 12 gauge slug category run from 300 to 438 grains.
What choke should I use for slugs in a 12 gauge?
For rifled slugs in a smooth bore, a cylinder or improved cylinder choke is the usual choice. Sabot slugs need a fully rifled barrel or a rifled choke tube to spin and stay accurate. Always follow your shotgun maker’s manual, since some warn against slugs in tight turkey chokes.
What are 12 gauge slugs used for?
Hunters use 12 gauge slugs for deer, hogs and other big game, often in areas that limit hunters to shotguns. Some people also keep them for defense or carry them in bear country. Less-lethal rubber slugs are used for wildlife control where local laws allow it.
Will a 12 gauge slug take down a bear?
Hunters and guides do carry heavy slugs for bear, but shot placement, the slug’s build and the shooter’s skill all matter. Hard, heavy slugs are the usual pick. Check your state’s hunting rules for bear, and practice with the exact load you plan to carry.
