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Rifle Ammo

Shop Rifle Ammo Online — Bulk Deals, Top Calibers & Trusted Brands

GunMag Warehouse makes it easy to buy rifle ammo online with the best prices, widest selection, and bulk deals. Whether you’re preparing for the shooting range, hunting season, or home defense, we stock rifle ammunition for every purpose and platform.

Browse by caliber, brand, grain weight, or use case. From favorites like .223 Remington, 5.56 NATO, .308 Winchester, and 7.62x39 to precision loads like 6.5 Creedmoor and 6.5 PRC,  we’ve got you covered. Looking for harder to find ammunition? We have you covered with our full selection of everyday to specialty rounds. 

We carry the best rifle ammo brands including Federal Ammunition, Hornady, Remington, PMC Ammunition, and Wolf Ammunition. With bulk rifle ammo for sale, amazing deals, and reliable shipping, GunMag Warehouse has earned its reputation as one of the best places to buy rifle ammunition online. 

Stock up today and never overpay for rifle ammunition again.

  1. Ammo Inc. Signature Hunting .300 Blackout Ammo 155gr BTHP
    Ammo Inc. Signature Hunting .300 Blackout Ammo 155gr BTHP
    (40)
    $19.99 $499.99 $12.99 $314.99 Save $185.00 $0.63 $0.65 per round
  2. Wolf PolyFormance .300 Blackout Ammo 145gr FMJ 20 Rounds
    Wolf PolyFormance .300 Blackout Ammo 145gr FMJ 20 Rounds
    (4)
    $19.99 $11.99 Save $8.00 ($0.60 per round)
  3. Ammo Inc. Signature Hunting .300 Blackout Ammo 168gr BTHP
    Ammo Inc. Signature Hunting .300 Blackout Ammo 168gr BTHP
    (75)
    $18.99 $189.99 $13.99 $119.99 Save $70.00 $0.60 $0.70 per round
  4. Sellier & Bellot .300 Blackout Ammo 147gr FMJ 20 Rounds
    Sellier & Bellot .300 Blackout Ammo 147gr FMJ 20 Rounds
    $17.99 $14.99 Save $3.00 ($0.75 per round)
  6. Sellier & Bellot .300 Blackout Ammo 124gr FMJ 20 Rounds
    Sellier & Bellot .300 Blackout Ammo 124gr FMJ 20 Rounds
    (1)
    $25.99 $15.99 Save $10.00 ($0.80 per round)
  8. Hornady Frontier Cartridge .300 Blackout Ammo 125gr FMJ
    Hornady Frontier Cartridge .300 Blackout Ammo 125gr FMJ
    (7)
    $26.99 $153.99 $19.99 $137.99 Save $33.00 $0.90 $1.00 per round
  10. Federal American Eagle Subsonic .300 Blackout Ammo 220gr OTM 20 Rounds
    Federal American Eagle Subsonic .300 Blackout Ammo 220gr OTM 20 Rounds
    Out of stock
    (3)
    $28.99 $24.99 Save $4.00 ($1.25 per round)
  11. Winchester USA Target .300 Blackout Ammo 125gr OT 20 Rounds
    Winchester USA Target .300 Blackout Ammo 125gr OT 20 Rounds
    Out of stock
    (3)
    $28.99 $15.99 Save $13.00 ($0.80 per round)
  14. Remington UMC .300 Blackout Ammo 220gr OTFB
    Remington UMC .300 Blackout Ammo 220gr OTFB
    Out of stock
    (7)
    $33.99 $69.99 $21.99 $67.99 Save $12.00 $1.10 $1.36 per round
  15. PPU Standard Rifle .300 Blackout Ammo 125gr FMJ 20 Rounds
    PPU Standard Rifle .300 Blackout Ammo 125gr FMJ 20 Rounds
    Out of stock
    $21.99 $19.99 Save $2.00 ($1.00 per round)
  16. Sellier & Bellot .300 Blackout Subsonic Ammo 200gr FMJ 20 Rounds
    Sellier & Bellot .300 Blackout Subsonic Ammo 200gr FMJ 20 Rounds
    Out of stock
    (3)
    $21.95 $15.99 Save $5.96 ($0.80 per round)
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Frequently Asked Questions

What Is the Most Common Rifle Ammo?

The 22 Long Rifle is arguably the most popular rifle cartridge today, partly because it’s not exclusive to rifles, despite its name. Many handguns also fire 22 LR, and this versatility, plus the caliber’s long history, make it one of the most widespread ammo types today.

Other common rifle ammo includes the .223 Remington and 5.56 NATO, thanks to the enduring popularity of the AR-15 platform. The U.S. alone is home to over 20 million AR-15-style rifles, so ammo manufacturers produce a lot of ammo to meet this demand.

The 6.5 Creedmoor and .308 Winchester round out the rest of the five most common rifle ammo types today. GunMag Warehouse proudly stocks all of these popular calibers in multiple brands, applications, and round counts to help you get the best ammo for your needs.

Can You Use .223 Ammo in a 5.56 Rifle?

While the .223 Remington and 5.56 NATO appear almost identical to the naked eye, you shouldn’t fire one in a rifle chambered for the other. Despite their many similarities, there are slight differences that can pose safety issues to you and your firearm.

You can shoot .223 ammo out of a 5.56 safely, however, the 5.56 is designed to withstand higher pressures, and a 5.56 round’s slight size and shape discrepancies can create excess pressure in the chamber of a .223 rifle. While some shooters debate how much of a real-world difference this makes, it’s best to play it safe and stick to the ammo your firearm is designed for. 

What Ammo Does a Bolt-Action Rifle Use?

There is no specific type of ammo exclusive to bolt-action rifles, and ultimately, you should use whatever caliber your firearm is chambered for. However, there are some ammo types that are more common in bolt-actions.

Bolt-action rifles are popular among hunters, especially in states with tighter restrictions on magazine capacity and “assault”-style weapons. Consequently, hunting ammo, which emphasizes reliability and precision, is a popular choice for bolt-action owners.

Similarly, some shooters prefer straight-walled cartridges in their bolt-actions because of local restrictions. While straight-walled cartridges are most common among lever-actions, some bolt-action rifles can use these, too.