Remington Ultimate Defense 12 Gauge 3-Inch 00 Buckshot, 5-Round Box

Remington Ultimate Defense 12 Gauge 00 Buckshot (part no. R20633) is built for the one situation where a shotgun needs to work exactly right the first time. Remington loads this 3-inch magnum shell with 00 buckshot at a rated 1225 fps, giving a smoothbore barrel the pattern density and knockdown power that close-range personal defense demands. The 5-round box is sized as a dedicated defense load rather than a bulk range box, meant to top off a home-defense shotgun rather than fill a range bag. For anyone staging a 12 gauge for the door, these shotgun shells are the load Remington built specifically for that job.

Key Specifications

• The gauge is 12 Gauge, fitting any standard 12-gauge pump or semi-auto without an adapter.
• The shell length is 3 inches, giving the load extra powder capacity over a standard 2-3/4-inch shell.
• The shot is 00 Buckshot, the standard defensive pellet size for close-range stopping power.
• Muzzle velocity is rated at 1225 fps, moving the payload fast without punishing magnum recoil.
• Each box holds 5 rounds, sized as a home-defense load rather than a high-volume case.
• Multiple buckshot pellets strike together, spreading impact across several simultaneous wound channels for faster incapacitation than a single projectile.
• Pattern testing in a smoothbore barrel keeps the spread tight at close range, supporting one-shot confidence when it counts.
• At roughly $2.05 per round, the price reflects a dedicated defensive load rather than bulk plinking ammunition.
• Remington builds Ultimate Defense buckshot in both standard and reduced-recoil pellet configurations, matching the load to different shotgun platforms.

Frequently Asked Questions

What is this load intended for? Remington built Ultimate Defense specifically for home- and personal-defense use in a 12 gauge shotgun, not hunting or clays.

Will this shell function in a 2-3/4-inch chamber? No, this is a 3-inch magnum shell and requires a 12 gauge shotgun chambered for 3-inch shells.

Why only 5 rounds per box? Defense loads are sold in small boxes sized to load a magazine tube, not stock a range bag for high-volume shooting.

Buy Remington Ultimate Defense 12 Gauge 00 Buck

A home-defense shotgun is only as good as what is loaded in the tube, and Ultimate Defense is Remington’s answer for that exact role. Load it, verify function in your own gun, and keep the box on hand. Order from our Lubbock, Texas gun shop and it ships fast to your door.