Best Ammo for the Mossberg 500: Buckshot, Birdshot, and Slugs

The Mossberg 500 is the most-produced shotgun in history with over 11 million units manufactured. It serves as a home defense gun, a deer gun, a duck gun, a turkey gun, a clay sports gun, and a truck gun — often all in the same household, with barrel swaps. That versatility means shotgun ammo selection is far more complex than handgun or rifle ammo. You're not just picking a bullet weight — you're choosing shot size, shell length, shot material, payload weight, and velocity, all of which interact with your barrel length and choke.

This guide covers the best ammo for every common Mossberg 500 use case.

What You Need to Know First

Shell Length: Check Your Chamber

The Mossberg 500 typically comes in 2¾-inch and 3-inch chamber versions. Check the barrel markings — it'll say "2¾" or "2¾ & 3 inch." If your barrel is marked 2¾ only, do not load 3-inch shells. If it's marked for 3-inch, you can safely shoot both 2¾ and 3-inch shells.

Most home defense and general-purpose shooting uses 2¾-inch shells. Three-inch magnums are for specific hunting applications (waterfowl, turkey) where you need more payload downrange.

Choke Matters

If your Mossberg 500 has interchangeable choke tubes (Accu-Choke system), your choke selection affects pattern size. Cylinder bore (no choke) gives the widest spread — good for close-range defense. Improved Cylinder and Modified chokes tighten the pattern for sporting and hunting use. Never shoot slugs through a Full or Extra-Full choke tube.

Best Buckshot for Home Defense

Federal FliteControl 00 Buck (8 pellets, 2¾")

Federal's FliteControl wad is a game-changer for buckshot patterning. In conventional buckshot, the wad separates from the pellets immediately upon exiting the muzzle, and the pellets spread rapidly. The FliteControl wad stays with the pellets longer, acting like a sabot, producing dramatically tighter patterns. At typical home defense distances (5–15 yards), FliteControl keeps all 8 pellets in a group you can cover with your hand — even from a cylinder bore barrel.

This is widely considered the gold standard for defensive buckshot. The tighter pattern means more pellets in the threat and fewer stray pellets that could hit something you didn't intend to.

Hornady Critical Defense 00 Buck (8 pellets, 2¾")

Hornady's entry uses their Versatite wad, which provides FliteControl-like pattern tightening. The pellets are plated for corrosion resistance and consistent performance. Slightly easier to find than Federal LE loads in some areas.

Federal #1 Buck (reduced recoil)

If overpenetration through interior walls is your primary concern, #1 buckshot is a strong alternative to 00 buck. Each pellet is .30 caliber (vs. .33 for 00 buck), and reduced-recoil loads are noticeably more manageable in the lightweight Mossberg 500. For more on this topic, see our home defense ammo guide.

Best Birdshot for Sporting and Hunting

Clays / Trap / Skeet

For casual clay shooting and practice, Federal Top Gun or equivalent budget target loads are the move. If you're competing seriously in trap or skeet, Winchester AA is the traditional premium choice — its patterns are noticeably more consistent than budget shells.

Upland Bird Hunting (Pheasant, Quail, Dove)

Shot size #6 for pheasant, #7.5 or #8 for quail and dove. Standard 2¾" 1 1/8oz loads are adequate for all upland hunting. For late-season pheasant at longer range, step up to #5 shot or high-velocity loads. Use lead where legal; use steel or other non-toxic shot where required.

Waterfowl (Ducks and Geese)

Federal law requires non-toxic shot for waterfowl hunting. No lead allowed, period. Steel shot is the most affordable non-toxic option. Use #2 or #3 steel for ducks, BB or #1 steel for geese. If you're shooting a 3-inch chamber, 3-inch magnum steel loads give you more pellets and better pattern density at distance. Bismuth and tungsten loads perform closer to lead but cost significantly more.

Best Slugs

Best Rifled Slug (Smoothbore Barrel)

Federal Power-Shok 1 oz Rifled Slug: The standard by which other slugs are measured. Consistent accuracy from smoothbore barrels, adequate for deer at ranges up to 75–100 yards (the practical limit for smoothbore slug accuracy). Affordable enough for practice. Brenneke slugs are another excellent option — they use a wad that stays attached to the slug in flight, improving aerodynamic stability.

Best Sabot Slug (Rifled Barrel)

Federal Trophy Copper Sabot Slug: If you have a rifled slug barrel on your Mossberg 500, sabot slugs open up 150+ yard accuracy with sub-2-inch groups. The Trophy Copper uses a solid copper projectile that expands to nearly double its diameter. Hornady SST slugs are an equally strong choice.

Quick Reference: Best Ammo by Use Case

What to Avoid

3-inch shells in a 2¾-only chamber: This cannot be overstated. Check your barrel markings. A 3-inch shell in a 2¾" chamber is a dangerous overpressure situation.

Sabot slugs in a smoothbore barrel: They won't stabilize, accuracy will be terrible, and you'll waste money. Sabot slugs need a rifled barrel to spin.

Birdshot for home defense: As covered in our home defense guide, birdshot lacks the penetration depth for reliable incapacitation. Use buckshot or slugs.

Slugs through Full or Extra-Full choke tubes: The choke restriction can cause dangerous pressure spikes and damage to the choke tube. Use Cylinder or Improved Cylinder when shooting slugs.

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