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300 Win Magnum Ammo For Sale

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The .300 Winchester Magnum has been a leading choice in the large-game hunting community since its introduction in the 1960s. Not only is it a tremendously powerful cartridge, but the .300 Win Mag is also accurate enough for 1,000-yard shooting competitions. Learn More
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  1. Remington Core-Lokt 300 Win Mag Ammo - 20 Rounds of 150 Grain PSP Ammunition

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    $40.99
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    93 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 150 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3290 FPS
    Muzzle Energy 3605 ft lbs
    • 20 Rounds
    • $2.05 per round
    • Made by Remington

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

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    $44.99
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    116 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 150 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3150 FPS
    Muzzle Energy 3305 ft lbs
    • 20 Rounds
    • $2.25 per round
    • Made by Federal

  3. Winchester Copper Impact 300 Win Mag Ammo - 20 Rounds of 150 Grain Copper Extreme Point Ammunition

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    $46.99
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    19 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 150 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3260 FPS
    Muzzle Energy 3539 ft lbs

  4. Browning Silver Series 300 Win Mag Ammo - 20 Rounds of 180 Grain SP Ammunition

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    $46.99
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    71 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 180 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2960 FPS
    Muzzle Energy 3501 ft lbs
    • 20 Rounds
    • $2.35 per round
    • Made by Browning

  5. Federal 300 Win Mag Ammo - 20 Rounds of 180 Grain Fusion Ammunition

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    $54.99
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    33 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 180 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2960 FPS
    Muzzle Energy 3502 ft lbs
    • 20 Rounds
    • $2.75 per round
    • Made by Federal

  6. Federal 300 Win Mag Ammo - 20 Rounds of 165 Grain TSX Ammunition

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    $59.99
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    133 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 165 Grain
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 3050 FPS
    Muzzle Energy 3408 ft lbs
    • 20 Rounds
    • $3.00 per round
    • Made by Federal

  7. Federal 300 Win Mag Ammo - 20 Rounds of 200 Grain Terminal Ascent Ammunition

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    $59.99
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    135 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 200 Grain
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 2810 FPS
    Muzzle Energy 3506 ft lbs
    • 20 Rounds
    • $3.00 per round
    • Made by Federal

  8. Barnes VOR-TX Polymer Tip 300 Win Mag Ammo - 20 Rounds of 180 Grain TTSX Ammunition

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    $69.99
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    9 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 180 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2960 FPS
    • 20 Rounds
    • $3.50 per round
    • Made by Barnes

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

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    $72.99
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    75 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type 190 Grain
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2900 FPS
    Muzzle Energy 3548 ft lbs
    • 20 Rounds
    • $3.65 per round
    • Made by Federal

History of 300 Win Magnum Ammo

The .300 Winchester Magnum descended from the legendary .375 H&H cartridge, which after many successful hunts in Africa, developed a reputation for being capable of taking every game animal on the entire continent. Following in the footsteps of its predecessor, the .300 Win Mag has a reputation of being able to take any game animal in North America. When you compare .300 Win Mag vs .30-06, in most cases, the .300 Win Mag 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 U.S. 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 1,200 meters. This distance is 50-percent farther compared to the reach of the .308 Winchester, a very effective sniper rifle cartridge.

Competitive shooters also have warmed up to the 300 Win Mag, as they prefer the flatter trajectory of 300 Win Mag compared to 308. Federal 300 Win Mag Gold Medal Match ammo is some of the most accurate ammo on the market and will often be found on the firing line at PALMA and F-Class matches across the country.

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.

300 Win Magnum Ballistics: Chart of Average 300 Win Magnum Ballistics

Note: This information comes from the manufacturer and is for informational purposes only. The actual ballistics obtained with your firearm can vary considerably from the advertised ballistics. Also, ballistics can vary from lot to lot with the same brand and type load.

300 Win Magnum Bullet WEIGHT Muzzle VELOCITY (fps) Muzzle ENERGY (ft. lbs.) TRAJECTORY (in.)
  Muzzle 100 yds. 200 yds. 300 yds. 400 yds. Muzzle 100 yds. 200 yds. 300 yds. 400 yds. 100 yds. 200 yds. 300 yds. 400 yds.
150 Grain 3290 2951 2636 2342 2068 3605 2900 2314 1827 1424 2.5 1.9 -3.8 -15.8
150 Grain Superformance 3400 3150 2914 2690 2477 3850 3304 2817 2409 2043 1 0 -5.1 -15
165 Grain 3100 2877 2665 2462 2269 3522 3033 2603 2221 1897 2.5 2.4 -3 -16.9
178 Grain 2900 2760 2568 2375 2191 3509 3030 2606 2230 1897 2.5 1.4 -5 -17.6
178 Grain 2960 2770 2588 2413 2245 3463 3032 2647 2301 1992 1.5 0 -6.7 -19.4
178 Grain Super Match 2960 2770 2587 2412 2243 3462 3031 2645 2298 1988 1.5 0 -6.7 -19.4
180 Grain 2960 2745 2540 2344 2157 3501 3011 2578 2196 1859 2.5 1.2 -5.5 -18.5
180 Grain Superformance 3130 2927 2732 2546 2366 3917 3424 2983 2589 2238 1.3 0 -5.9 -17.3
190 Grain 2885 1691 2506 2327 2156 3511 3055 2648 2285 1961 2.5 1.2 -5.7 -19
200 Grain 2825 2595 2376 2167 1970 3545 2991 2508 2086 1742 -2.5 1.6 -4.7 -17.2
220 Grain 2680 2448 2228 2020 1823 3508 2927 2424 1993 1623 2.5 0 -9.5 -27.5
Molly Carter
Written by
Molly Carter