300 Win Magnum Ammo

The .300 Winchester Magnum has been a leading choice in the large game hunting community since its introduction in the 1960’s. Not only a a tremendously powerful cartridge, the .300 Win Mag is accurate enough for 1000 yard shooting competitions. Learn More

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  1. Prvi Partizan Bullet Thunder 300 Win Mag Ammo - 20 Rounds of 170 Grain PSP Ammunition

    21 In stock now

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    Image For 20 Rounds Of 170 Grain PSP Boxer Brass 300 Win Mag Prvi Partizan Ammunition
    $24.99 Price

    Qty:

    • 20 Rounds
    • Made by Prvi Partizan

    • New Condition
    • 20 Rounds
    • Made by Prvi Partizan
    • Foreign Discount Hunting
    • $1.25 Cost Per Round
    • Prvi Partizan SKU PP3.63
    • UPC 8605003800873
  2. Fiocchi 300 Win Mag Ammo - 20 Rounds of 150 Grain SPBT Ammunition

    68 In stock now

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    Image For 20 Rounds Of 150 Grain SPBT Boxer Brass 300 Win Mag Fiocchi Ammunition
    $32.50 Price
    • $32.25 each if you buy 5 -  save 1%
    • $32.00 each if you buy 10 -  save 2%

    Qty:

    • 20 Rounds
    • Made by Fiocchi

    • New Condition
    • 20 Rounds
    • Made by Fiocchi
    • Foreign-made Range
    • $1.60 to $1.63 Cost Per Round
    • Fiocchi SKU 300WMA
  3. Sellier and Bellot 300 Win Mag Ammo - 20 Rounds of 180 Grain Exergy (XRG) Ammunition

    31 In stock now

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    Image For 20 Rounds Of 180 Grain Exergy (XRG) Boxer Brass 300 Win Mag Sellier and Bellot Ammunition
    $35.00 Price

    Qty:

    • 20 Rounds
    • Made by Sellier and Bellot

  4. Federal 300 Win Mag Ammo - 20 Rounds of 190 Grain HPBT Ammunition

    15 In stock now

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    Image For 20 Rounds Of 190 Grain HPBT Boxer Brass 300 Win Mag Federal Ammunition
    $49.00 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Range
    • $2.45 Cost Per Round
    • Federal SKU GM300WM
    • UPC 029465091736
  5. Barnes VOR-TX Polymer Tip 300 Win Mag Ammo - 20 Rounds of 180 Grain TTSX Ammunition

    34 In stock now
    Image For 20 Rounds Of 180 Grain TTSX Boxer Brass 300 Win Mag Barnes Ammunition
    $49.99 Price

    Qty:

    • 20 Rounds
    • Made by Barnes

    • New Condition
    • 20 Rounds
    • Made by Barnes
    • American-made Hunting
    • $2.50 Cost Per Round
    • Barnes SKU 21538
    • UPC 716876030088
  6. Barnes VOR-TX 300 Win Mag Ammo - 20 Rounds of 130 Grain Polymer Tipped Ammunition

    2 In stock now
    Image For 20 Rounds Of 130 Grain Polymer Tipped Boxer Brass 300 Win Mag Barnes Ammunition
    $54.99 Price

    Qty:

    • 20 Rounds
    • Made by Barnes

    • New Condition
    • 20 Rounds
    • Made by Barnes
    • American-made Hunting
    • 130 Grain
    • Polymer Tipped Bullet
    • Brass Casing
    • Boxer Primer
    • $2.75 Cost Per Round
    • Barnes SKU 30739
    • UPC 716876050918
  7. Nosler Trophy Grade Ammunition 300 Win Mag Ammo - 20 Rounds of 180 Grain Polymer Tipped Ammunition

    10 In stock now
    Image For 20 Rounds Of 180 Grain Polymer Tipped Boxer Brass 300 Win Mag Nosler Ammunition Ammunition
    $59.95 Price

    Qty:

    • 20 Rounds
    • Made by Nosler Ammunition

    • New Condition
    • 20 Rounds
    • Made by Nosler Ammunition
    • American-made Hunting
    • 180 Grain
    • Polymer Tipped Bullet
    • Brass Casing
    • Boxer Primer
    • $3.00 Cost Per Round
    • Nosler Ammunition SKU 60059
    • UPC 054041600590
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The .300 Winchester Magnum descended from the legendary .375 H&H cartridge which developed through many successful hunts in Africa, a reputation of being capable of taking every game animal on the whole continent. Following in the footsteps of its predecessor, the .300 Win Mag has a reputation of being able to take any game animals in North America. The .300 Win Mag in most cases enjoys a velocity advantage of nearly 300 feet per second over the .30-06, a cartridge that lives up to its heritage and name.

The popularity of the .300 Win Mag surged again in the early years of the new millennium since the US Army started converting its sniper rifles from .308 Winchester to the .300 WM cartridge, which is able to engage targets of human size at ranges as great as 1200 meters. This distance is 50% farther than the reach of the .308 Winchester, which is itself a very effective sniper rifle cartridge.

The .300 Win Mag is commonly chambered in rifles with bolt actions like the Remington 700 and the Winchester Model 70. It has, however, also been chambered in semi-automatic rifles like the Browning BAR and even lever action rifles including the Browning BLR.