
12 Ga Ammo
The 12 gauge is the most versatile shotgun shell ever produced — one shotgun chambered for it handles home defense, upland birds, waterfowl, deer, turkey, clays, and predators, simply by changing the shell. Impact Guns carries 12 gauge buckshot, slugs, birdshot, target loads, and specialty rounds from Federal, Winchester, Remington, Hornady, Hevi-Shot, and other leading makers.
Read our full 12 Gauge Ammo Buying Guide ↓
Buckshot: Defense and Big Game
Buckshot loads fire multiple large pellets per shell — 00 buckshot, the most common defensive load, delivers eight or nine .33-caliber pellets per shot, devastating at home-defense distances. #4 buckshot uses more, smaller pellets for slightly reduced over-penetration. For dedicated home defense, Federal Flite Control and Hornady Critical Defense buckshot use specialized wads that hold patterns tight at typical indoor distances. Buckshot is also legal for deer in most states, particularly in the southeastern US where dense cover limits shot range.
Slugs: Rifle-Like Performance From a Shotgun
Slugs fire a single solid projectile — effective on deer, bear, and large game where rifles are restricted by law (much of the eastern US slug-only zones). Foster slugs (rifled slugs) work in smooth-bore barrels; sabot slugs require rifled barrels but deliver rifle-grade accuracy out to 150 yards. For dedicated slug guns with rifled barrels, premium sabot loads like Hornady SST and Federal TruBall extend 12 gauge to genuine medium-range hunting performance.
Birdshot: Upland, Waterfowl, and Clays
Birdshot fires many small pellets — sized for the target species. #7½ and #8 shot suit clays and quail; #6 covers pheasant and grouse; #4 and BB handle ducks and geese. Federal regulation requires non-toxic shot (steel, bismuth, tungsten) for waterfowl since 1991 — lead shot remains legal for upland birds and target use in most jurisdictions. Bismuth and tungsten loads outperform steel ballistically but cost more; for occasional waterfowl hunters, steel shot is the practical default.
Target and Clay Loads
Trap, skeet, sporting clays, and general target practice use light 12 gauge loads — typically 1 to 1⅛ ounces of #7½, #8, or #9 shot at moderate velocity. These produce manageable recoil for high-volume shooting and provide consistent patterns at 25 to 40 yards. Federal Top Gun and Winchester AA are perennial competition standards; Estate and budget-tier loads work fine for casual range use. See our skeet and clays ammo for the dedicated category.
2-3/4” vs. 3” vs. 3-1/2” Shells
12 gauge ships in three common shell lengths: 2-3/4”, 3”, and 3-1/2”. Longer shells hold more shot or heavier projectiles, increasing energy and recoil. The 2-3/4” covers nearly every practical use; 3” magnum loads benefit turkey, waterfowl at distance, and big-game slug applications; 3-1/2” is the heaviest waterfowl and turkey option and recoils accordingly. Most modern shotguns accept multiple shell lengths — verify your gun’s chamber rating before shooting 3” or 3-1/2”.
Frequently Asked Questions
What 12 gauge ammo is best for home defense?
00 buckshot is the consensus defensive standard — eight or nine .33-caliber pellets deliver overwhelming stopping power at home-defense ranges. Federal Flite Control 00 buckshot and Hornady Critical Defense use specialized wads to keep patterns tight indoors, reducing missed pellet hazard. #4 buckshot reduces over-penetration risk slightly with smaller pellets.
Can I shoot 3-inch shells in a 2-3/4-inch shotgun?
No — never. The shotgun’s chamber is rated for a specific maximum shell length, and firing longer shells creates dangerous pressure. Modern shotguns are typically chambered for 3” or 3-1/2”, accepting all shorter shells. Older shotguns may be 2-3/4” only. The chamber length is stamped on the barrel.
What size shot for ducks vs. geese?
Non-toxic shot is required for all waterfowl hunting. For ducks, #2 to #4 steel shot is standard; for geese, BB or BBB steel for the larger body and tougher feathers. Bismuth and tungsten loads can use smaller shot sizes thanks to higher density, often #4 bismuth for ducks and #2 bismuth for geese.
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See Also
12 Gauge Shotguns • Tactical Shotguns • Home Defense Guns • Turkey Shotguns
