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 300 Win Mag Ammo - 20 Rounds of 150 Grain SP Ammunition

    4 In stock now

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    Image For 20 Rounds Of 150 Grain SP Boxer Brass 300 Win Mag Prvi Partizan Ammunition
    $19.00 Price

    Qty:

    • 20 Rounds
    • Made by Prvi Partizan

    • New Condition
    • 20 Rounds
    • Made by Prvi Partizan
    • Foreign Discount Range
    • 95¢ Cost Per Round
    • Prvi Partizan SKU PP3.61
    • UPC 8605003800392
  2. Prvi Partizan Bullet Thunder 300 Win Mag Ammo - 20 Rounds of 170 Grain PSP Ammunition

    37 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
  3. Winchester Super-X 300 Win Mag Ammo - 20 Rounds of 180 Grain PP Ammunition

    30 In stock now

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    Image For 20 Rounds Of 180 Grain PP Boxer Brass 300 Win Mag Winchester Ammunition
    $25.95 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Hunting
    • $1.30 Cost Per Round
    • Winchester SKU X30WM2
    • UPC 020892200388
  4. Sellier and Bellot 300 Win Mag Ammo - 20 Rounds of 180 Grain SPCE Ammunition

    71 In stock now

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    Image For 20 Rounds Of 180 Grain SPCE Boxer Brass 300 Win Mag Sellier and Bellot Ammunition
    $26.00 Price

    Qty:

    • 20 Rounds
    • Made by Sellier and Bellot

  5. Hornady 300 Win Mag Ammo - 20 Rounds of 150 Grain SP Ammunition

    7 In stock now

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    Image For 20 Rounds Of 150 Grain SP Boxer Brass 300 Win Mag Hornady Ammunition
    $27.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Discount Hunting
    • $1.35 Cost Per Round
    • Hornady SKU 8204
    • UPC 090255382044
  6. Winchester Super-X 300 Win Mag Ammo - 20 Rounds of 150 Grain PP Ammunition

    80 In stock now

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    Image For 20 Rounds Of 150 Grain PP Boxer Brass 300 Win Mag Winchester Ammunition
    $28.00 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Discount Hunting
    • $1.40 Cost Per Round
    • Winchester SKU X30WM1
    • UPC 020892200814
  7. Winchester Deer Season XP 300 Win Mag Ammo - 20 Rounds of 150 Grain Polymer Tipped Ammunition

    85 In stock now

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    Image For 20 Rounds Of 150 Grain Polymer Tipped Boxer Brass 300 Win Mag Winchester Ammunition
    $28.25 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Discount Hunting
    • 150 Grain
    • Polymer Tipped Bullet
    • Brass Casing
    • Boxer Primer
    • $1.41 Cost Per Round
    • Winchester SKU X300DS
    • UPC 020892221598
  8. Federal 300 Win Mag Ammo - 20 Rounds of 180 Grain SP Ammunition

    10 In stock now

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    Image For 20 Rounds Of 180 Grain SP Boxer Brass 300 Win Mag Federal Ammunition
    $28.50 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Discount Hunting
    • $1.43 Cost Per Round
    • Federal SKU 300WBS
    • UPC 029465091415
  9. Remington Core-Lokt 300 Win Mag Ammo - 20 Rounds of 150 Grain PSP Ammunition

    21 In stock now

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    Image For 20 Rounds Of 150 Grain PSP Boxer Brass 300 Win Mag Remington Ammunition
    $29.00 Price

    Qty:

    • 20 Rounds
    • Made by Remington

    • New Condition
    • 20 Rounds
    • Made by Remington
    • American-made Hunting
    • $1.45 Cost Per Round
    • Remington SKU R300W1
    • UPC 047700055701
  10. Remington 300 Win Mag Ammo - 20 Rounds of 180 Grain PSP Ammunition

    3 In stock now

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    Image For 20 Rounds Of 180 Grain PSP Boxer Brass 300 Win Mag Remington Ammunition
    $29.50 Price

    Qty:

    • 20 Rounds
    • Made by Remington

    • New Condition
    • 20 Rounds
    • Made by Remington
    • American-made Range
    • $1.48 Cost Per Round
    • Remington SKU R300W2
    • UPC 047700055800
  11. Federal 300 Win Mag Ammo - 20 Rounds of 180 Grain Fusion Ammunition

    75 In stock now

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    Image For 20 Rounds Of 180 Grain Fusion Boxer Brass 300 Win Mag Federal Ammunition
    $29.99 Price
    • $29.25 each if you buy 5 -  save 2%
    • $29.00 each if you buy 10 -  save 3%

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Range
    • $1.45 to $1.50 Cost Per Round
    • Federal SKU F300WFS3
    • UPC 029465098025
  12. Hornady American Whitetail 300 Win Mag Ammo - 20 Rounds of 180 Grain InterLock Ammunition

    9 In stock now

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    Image For 20 Rounds Of 180 Grain Spire Point Boxer Brass 300 Win Mag Hornady Ammunition
    $30.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Hunting
    • 180 Grain
    • Spire Point Bullet
    • Brass Casing
    • Boxer Primer
    • $1.50 Cost Per Round
    • Hornady SKU 82044
    • UPC 090255820447
  13. Federal Fusion 300 Win Mag Ammo - 20 Rounds of 150 Grain Fusion Ammunition

    18 In stock now

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    Image For 20 Rounds Of 150 Grain Fusion Boxer Brass 300 Win Mag Federal Ammunition
    $31.99 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Hunting
    • $1.60 Cost Per Round
    • Federal SKU F300WFS1
    • UPC 029465098001
  14. Sellier and Bellot 300 Win Mag Ammo - 20 Rounds of 180 Grain Exergy (XRG) Ammunition

    34 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

  15. Remington 300 Win Mag Ammo - 20 Rounds of 180 Grain PSP Ammunition

    14 In stock now
    Image For 20 Rounds Of 180 Grain PSP Boxer Brass 300 Win Mag Remington Ammunition
    $35.00 Price

    Qty:

    • 20 Rounds
    • Made by Remington

    • New Condition
    • 20 Rounds
    • Made by Remington
    • American-made Hunting
    • $1.75 Cost Per Round
    • Remington SKU PRH300WC
    • UPC 047700414300
  16. Fiocchi 300 Win Mag Ammo - 20 Rounds of 180 Grain SST Ammunition

    9 In stock now

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    Image For 20 Rounds Of 180 Grain SST Boxer Brass 300 Win Mag Fiocchi Ammunition
    $36.00 Price

    Qty:

    • 20 Rounds
    • Made by Fiocchi

    • New Condition
    • 20 Rounds
    • Made by Fiocchi
    • Foreign-made Range
    • $1.80 Cost Per Round
    • Fiocchi SKU 300WMHSA
    • UPC 762344709079
  17. Hornady Superformance 300 Win Mag Ammo - 20 Rounds of 180 Grain SST Ammunition

    16 In stock now

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    Image For 20 Rounds Of 180 Grain SST Boxer Brass 300 Win Mag Hornady Ammunition
    $36.95 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Hunting
    • $1.85 Cost Per Round
    • Hornady SKU 82193
    • UPC 090255821932
  18. Hornady Precision Hunter 300 Win Mag Ammo - 20 Rounds of 200 Grain ELD-X Ammunition

    11 In stock now

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    Image For 20 Rounds Of 200 Grain ELD Boxer Brass 300 Win Mag Hornady Ammunition
    $40.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Hunting
    • $2.00 Cost Per Round
    • Hornady SKU 82002
    • UPC 090255820027
  19. Hornady Superformance 300 Win Mag Ammo - 20 Rounds of 165 Grain GMX Ammunition

    26 In stock now

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    Image For 20 Rounds Of 165 Grain GMX Boxer Brass 300 Win Mag Hornady Ammunition
    $42.99 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Hunting
    • $2.15 Cost Per Round
    • Hornady SKU 82026
    • UPC 090255820263
  20. Federal Vital-Shok 300 Win Mag Ammo - 20 Rounds of 180 Grain Trophy Copper Polymer Tipped Ammunition

    1 In stock now

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    Image For 20 Rounds Of 180 Grain Polymer Tipped Boxer Nickel-Plated Brass 300 Win Mag Federal Ammunition
    $43.99 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Hunting
    • $2.20 Cost Per Round
    • Federal SKU P300WTC1
    • UPC 029465063542
  21. Federal Vital-Shok 300 Win Mag Ammo - 20 Rounds of 180 Grain Trophy Bonded Tip Ammunition

    4 In stock now

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    Image For 20 Rounds Of 180 Grain Trophy Bonded Tip Boxer Nickel-Plated Brass 300 Win Mag Federal Ammunition
    $44.00 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Hunting
    • $2.20 Cost Per Round
    • Federal SKU P300WTT1
    • UPC 029465099473
  22. Federal 300 Win Mag Ammo - 20 Rounds of 190 Grain HPBT Ammunition

    5 In stock now

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    Image For 20 Rounds Of 190 Grain HPBT Boxer Brass 300 Win Mag Federal Ammunition
    $47.00 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Range
    • $2.35 Cost Per Round
    • Federal SKU GM300WM
    • UPC 029465091736
  23. Barnes 300 Win Mag Ammo - 20 Rounds of 165 Grain TTSX Ammunition

    11 In stock now

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    Image For 20 Rounds Of 165 Grain TTSX Boxer Brass 300 Win Mag Barnes Ammunition
    $52.00 Price

    Qty:

    • 20 Rounds
    • Made by Barnes

    • New Condition
    • 20 Rounds
    • Made by Barnes
    • American-made Range
    • $2.60 Cost Per Round
    • Barnes SKU 21537
    • UPC 300WinMag165TTSXBARNES-20
  24. Sellier and Bellot 300 Win Mag Ammo - 20 Rounds of 180 Grain Nosler Partition Ammunition

    1 In stock now

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    Image For 20 Rounds Of 180 Grain Nosler Partition Boxer Brass 300 Win Mag Sellier and Bellot Ammunition
    $52.00 Price

    Qty:

    • 20 Rounds
    • Made by Sellier and Bellot

  25. Nosler Trophy Grade Ammunition 300 Win Mag Ammo - 20 Rounds of 200 Grain SP Ammunition

    10 In stock now

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    Image For 20 Rounds Of 200 Grain SP Boxer Brass 300 Win Mag Nosler Ammunition Ammunition
    $58.00 Price

    Qty:

    • 20 Rounds
    • Made by Nosler Ammunition

    • New Condition
    • 20 Rounds
    • Made by Nosler Ammunition
    • American-made Hunting
    • $2.90 Cost Per Round
    • Nosler Ammunition SKU 60069
    • UPC 054041600699
  26. Nosler Trophy Grade Ammunition 300 Win Mag Ammo - 20 Rounds of 180 Grain Polymer Tipped Ammunition

    3 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.