HOWA Ammo Boost Magazine - 300 Win Mag, 5-Round Capacity

The HOWA Ammo Boost Magazine in 300 Win Mag gives you a practical five-round capacity option for Howa 1500, Weatherby Vanguard, Mossberg 1500, and Interarms 1500 rifles. Built from durable polymer, this detachable magazine is designed to work seamlessly with Howa Detachable Magazine Floorplates, making it a reliable choice for hunters and shooters who want dependable ammunition storage without breaking stride between shots.

Reloading mid-hunt or at the range doesn't have to be a chore. This 300 Win Mag rifle magazine holds enough rounds to keep you in the field or at your target without constant magazine swaps, while remaining compact enough for practical carry and use. The polymer construction balances weight savings with durability—it won't degrade under field conditions, and it resists the wear that comes with repeated loading and use in the field.

If you're running a Howa-platform rifle in this magnum caliber and want a straightforward, reliable way to increase your round count without fumbling through loose ammo, this magazine simplifies the process. Pair it with your existing Howa magazine system for a magazine setup that works as hard as you do.

Key Features

• 5-round capacity in 300 Win Mag
• Polymer construction for durability and weather resistance
• Detachable design works with Howa Detachable Magazine Floorplates
• Compatible with Howa 1500, Weatherby Vanguard, Mossberg 1500, and Interarms 1500 rifles
• Reduces reload frequency during hunting or range sessions

Specifications

Frequently Asked Questions

What rifles does this 300 Win Mag magazine work with?

The HOWA Ammo Boost Magazine is compatible with Howa 1500, Weatherby Vanguard, Mossberg 1500, and Interarms 1500 rifles when used with Howa Detachable Magazine Floorplates.

Do I need anything else to use this magazine?

Yes—this magazine requires a Howa Detachable Magazine Floorplate to function properly with your rifle. The floorplate allows the magazine to attach to your rifle's magazine well.

Is this magazine durable for field use?

Yes. The polymer construction is built to last through repeated use in the field and resists damage from weather and rough handling that hunters and shooters typically encounter.