300 Win Mag Ammo

A powerful, accurate cartridge used for everything from big game hunting to long-rane competition to police sniping, the .300 Winchester Magnum ammo is a hard-kicking round derived from the even more powerful (and even harder-kicking) .375 H&H Magnum. It also has the notable advantage of being compact enough to fit in the non-magnum rifle actions of proven rifles like the Remington 700.

.300 Win Mag ammunition fire a medium weight 165-200 grain bullet (competition bullets can reach up to 220 grains for stability) at a muzzle velocity of just over 3,000 feet per second. Soft point loads offer excellent performance against all types of North American game, while Sierra MatchKings and other precision bullets dominate the competitive arena.

One of the more interesting weapons chambered in .300 Win Mag is the M2010 Enhanced Sniper Rifle, which is based on the M24 rifle. The M2010's use of this powerful chambering enables American snipers to strike targets at longer range than those possible with .308/7.62 NATO rifles in difficult environments like Afghanistan.

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19 products

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  1. Hornady American Whitetail 300 Win Mag 150 Grain SP Interlock - 20 Rounds

    $34.85

    In stock

    Manufacturer Hornady
    Condition New
    Bullet Weight 150 Grain
    Bullet Type Soft-Point (SP)
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 8204
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255382044
    Cost Per Round $1.74 per round
    20 rounds of Hornady 300 Winchester Magnum ammo that'll have your gun firing for a while and your face smiling for even longer! The Boxer primer, 150 Grain Soft-Point (SP) bullet and Brass cases on these New rounds make for the perfect companion for hunting whitetail deer. Pick up some rounds today and you'll get fast shipping along with Widener's world class service.
  2. Federal Power-Shok 300 Winchester Magnum 150 Grain SP Speer Hot-Cor® - 20 Rounds

    $35.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 150 Grain
    Bullet Type Soft-Point (SP)
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 300WGS
    Primer Type Boxer
    UPC Barcode 029465091446
    Cost Per Round $1.79 per round
    20 rounds of Federal 300 Winchester Magnum ammo that'll have your gun firing for a while and your face smiling for even longer! The Boxer primer, 150 Grain Soft-Point (SP) bullet and Brass cases on these New rounds make for the perfect companion for hunting whitetail deer. Pick up some rounds today and you'll get fast shipping along with Widener's world class service.
  3. Remington Core-Lokt 300 Win Mag 180 Grain PSP - 20 Rounds

    $37.85

    In stock

    Manufacturer Remington
    Condition New
    Bullet Weight 180 Grain
    Bullet Type Pointed Soft-Point (PSP)
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU R300W2
    Primer Type Boxer
    Magnetic No
    UPC Barcode 047700055800
    Cost Per Round $1.89 per round
    An excellent choice if you're in search of a great 300 Winchester Magnum round for hunting whitetail deer. This New Remington ammo comes loaded with a 180 Grain Pointed Soft-Point (PSP) along with a Boxer primer that's loaded in a Brass case. With this package, you'll receive 20 rounds ready to fire. Plus, you know it'll come fast from our warehouse to your door because we know shooting ammo is a lot more fun than looking at it online or waiting on delivery!
  4. Federal Fusion 300 Winchester Magnum 180 Grain Fusion - 20 Rounds

    $43.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 180 Grain
    Bullet Type Fusion
    Use Type hunting big game, hunting boar, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU F300WFS3
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465098025
    Cost Per Round $2.19 per round

    You can count on Federal Fusion ammunition to perform reliably when you've got deer, elk, or other game in your sights. Fusion bullets combine a soft point lead core with an electrochemically bonded jacket to produce devastating expansion and penetration without excess meat damage.

    Each .300 Winchester Magnum cartridge in this box of 20 fires a 180 grain version of the Fusion bullet at a muzzle velocity of 2,960 feet per second. Expect excellent accuracy and terminal ballistics in keeping with the reputation of the .300 Win Mag--though with recoil to match!

    Federal Fusion ammo is loaded in Anoka, Minnesota using non-corrosive Boxer primers and reloadable brass cases.

  5. Federal Fusion 300 Win Mag 165 Grain SP - 20 Rounds

    $43.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 165 Grain
    Bullet Type Bonded Soft Point
    Use Type hunting big game, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU F300WFS2
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465098018
    Cost Per Round $2.19 per round

    As the most popular 30 caliber, magnum, rifle round in the United States, the 300 Win Mag is just what you need for all your shooting purposes. Developed in 1963, this fantastic round has been used all over the country for hunting use and competition shooting, and due to its incredible accuracy, phenomenal range, and high power, it is perfect for taking down game from small predators to elk and helping you punch out the bull's eye of a target.

    Federal has been around since 1922, providing just the ammo America needs, marketing to people of every class. With these 165 grain, soft point, brass cased, boxer primed, Federal Fusion rounds, firing at 3080 feet per second, you have all the expansion, energy, accuracy, and take down power you need to bag any deer you find.

  6. Winchester Deer Season XP 300 Win Mag 150 Grain Polymer Tip - 20 Rounds

    $49.85

    In stock

    Manufacturer Winchester
    Condition New
    Bullet Weight 150 Grain
    Bullet Type Polymer Tipped
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU X300DS
    Primer Type Boxer
    Magnetic No
    UPC Barcode 020892221598
    Cost Per Round $2.49 per round

    Winchester's Extreme Point (XP) projectile design, utilized in this Deer Season XP ammunition, ensures that the massive impact energy of the .300 Win Mag caliber is properly directed into the vital areas of big bucks, elk, and moose. The copper-jacketed bullet weighs in at 150 grains, has a drag-resistant shape for aerodynamic performance, and wears a large-diameter polymer tip up top which is intended to increase the size of the initial entry wound. Upon impact, the ballistic cone is drive back into the alloy lead core causing calculated deformation for maximum ballistic trauma.

    A toothed cannelure at the bullet's midsection slows the rate of expansion and secures the bullet's jacket to its lead core; this effort allows the bullet to retain weight and momentum as it punches through the thick breastplate of a game target. Each bullet is crimped into a reloadable brass casing that hosts a precise load of clean-burning powder along with a non-corrosive Boxer primer.

  7. Federal 300 Winchester Magnum 165 Grain TSX – 20 Rounds

    $49.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 165 Grain
    Bullet Type TSX
    Use Type hunting big game, hunting whitetail deer
    Casing Type Nickel-Plated Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU P300WR
    Primer Type Boxer
    Magnetic No
    UPC Barcode 604544647853
    Cost Per Round $2.49 per round
    Accurate. Lethal. Lead-free. The Barnes TSX makes a perfect bullet for any 300 Winchester Magnum cartridge you would fire during a serious hunt! And that bullet only becomes better when Federal Premium complements it with their high-quality components and loading practices.

    The TSX is made of pure copper. It can’t deposit lead residue in a barrel’s rifling. It also reduces copper fouling by virtue of its Accu-Groove channels, which minimize the amount of bearing surface that comes into contact with the bore. The clean-shooting TSX features a precision heel radius, which simply gives propellant an extremely uniform surface to exert their energy against. Once the 165 grain TSX is airborne, its sleek frontal profile secures a G1 ballistic coefficient of 0.398. That’s why its trajectory to 500 yards ought to rise no higher than 18.2” above the barrel.

    The TSX’s monolithic composition also benefits penetration. The rugged bullet doesn’t shed significant weight as it plows into its target at high velocity, which is how it retains the momentum requisite for a deep wound channel. The TSX also doubles its diameter during penetration by undergoing rapid expansion: four separate and exceedingly injurious cutting petals!

    Nickel-plated brass cases are always a welcome touch. In addition to reducing friction during feeding and ejection, nickel wards off corrosion that could have interrupted seamless functionality.
  8. Fiocchi 300 Winchester Magnum 180 Grain SST - 20 Rounds

    $54.85

    In stock

    Manufacturer Fiocchi
    Condition New
    Bullet Weight 180 Grain
    Bullet Type SST
    Use Type hunting big game, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 300WMHSA
    Primer Type Boxer
    Magnetic No
    UPC Barcode 762344709079
    Cost Per Round $2.74 per round
    20 rounds of Fiocchi 300 Winchester Magnum ammo that'll have your gun firing for a while and your face smiling for even longer! The Boxer primer, 180 Grain SST bullet and Brass cases on these New rounds make for the perfect companion for hunting big game, hunting whitetail deer. Pick up some rounds today and you'll get fast shipping along with Widener's world class service.
  9. Federal Gold Medal Match 300 Winchester Magnum 190 Grain HPBT - 200 Rounds

    $549.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 190 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range
    Casing Type Brass
    Quantity 200
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU GM300WM
    Primer Type Boxer
    Magnetic No
    UPC Barcode 20029465091730
    Cost Per Round $2.75 per round

    When it comes to Federal, you know you are getting a great round, but these rounds bring something special to the table. For these rounds, Federal combined their special delivery system with Sierra MatchKing boat tailed bullets. Some critics and match shooters claim that this round is the very best factory made match shooting round on the market.

    The 300 Win Mag is the most popular rifle round among hunters. Why is this? It is because of the versatility and effectiveness of the round. Able to take down deer, moose, and elk, you will not have any problems out of this round.

    These particular rounds are designed for match shooting, hunting, and self defense. With these 190 grain hollow point boat tailed rounds, you will be able to perform any task.

  10. Federal 300 Winchester Magnum 200 Grain Terminal Ascent – 20 Rounds

    $57.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 200 Grain
    Bullet Type Polymer Tipped
    Use Type hunting big game, hunting whitetail deer
    Casing Type Nickel-Plated Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU P300WTA1
    Primer Type Boxer
    Magnetic No
    UPC Barcode 604544659429
    Cost Per Round $2.89 per round
    The Terminal Ascent. It is essentially Federal Premium’s Trophy Bonded Tip, but reengineered so it can undergo full terminal expansion at velocities up to 200 fps lower than its predecessor. Whether you’re hunting long-range or up-close with your 300 Winchester Magnum rifle, this ammo won’t let you down.

    The Terminal Ascent doesn’t miss an opportunity to conserve its own velocity. The bullet owes its flat, wind resistant trajectory to its sharp Slipstream Tip, drag-minimizing AccuChannel groove technology, tapered base and concentric jacket. All together, these features heighten the 200 grain Terminal Ascent’s G7 ballistic coefficient to 0.304 (G1 0.608). Zero in at 500 yards and witness a trajectory that tops out at 18.4”.

    The Slipstream tip is surrounded by a thin jacket mouth and anchored in the center of a dense lead core. It triggers wide expansion even when it reaches its mark with relatively little kinetic energy. The Terminal Ascent doesn’t fail at close range, either, as its core and thick copper shank are fully bonded. The bullet’s thick solid copper base also assures the momentum requisite for wide expansion coupled with deep penetration.

    Carefully matched primers and propellant charges provide reliable performance. Nickel-plated brass cases supply smooth feeding and enhanced corrosion resistance. Widener’s seals the deal with fast shipping!
  11. Barnes VOR-TX 300 Win Mag 150 Grain TTSX BT - 20 Rounds

    $58.85

    In stock

    Manufacturer Barnes
    Condition New
    Bullet Weight 150 Grain
    Bullet Type TTSX
    Use Type hunting big game, hunting boar, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 21569
    Primer Type Boxer
    Magnetic No
    UPC Barcode 716876130054
    Cost Per Round $2.94 per round
    An excellent choice if you're in search of a great 300 Winchester Magnum round for hunting big game, hunting boar, hunting whitetail deer. This New Barnes ammo comes loaded with a 150 Grain TTSX along with a Boxer primer that's loaded in a Brass case. With this package, you'll receive 20 rounds ready to fire. Plus, you know it'll come fast from our warehouse to your door because we know shooting ammo is a lot more fun than looking at it online or waiting on delivery!
  12. 300 Win Mag - 200 Grain ELD-X - Hornady Precision Hunter - 20 Rounds

    $58.85

    In stock

    Manufacturer Hornady
    Condition New
    Bullet Weight 200 Grain
    Bullet Type ELD-X
    Use Type hunting big game, hunting boar, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 82002
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255820027
    Cost Per Round $2.94 per round

    Give your hunting expeditions better accuracy and consistency with these .300 Winchester Magnum cartridges from Hornady’s Precision Hunter brand. You’ll have 20 rounds of 200-grain bullets loaded into high-quality brass and backed by outstanding primers and propellants. They have extended-range terminal performance and outstanding speed and energy, helping you make effective shots on your target.

    These cartridges give you muzzle statistics of 2,850 feet per second and 3,607 foot-pounds. Even when the cartridges travel 300 yards, they are traveling at 2,421 feet per second and have an energy of 2,603 foot pounds. You can take accurate shots and have consistent terminal performance, even at a distance.

    Hornady was founded in 1949 in Nebraska. The company’s founder, Joyce Hornady, wanted to create better bullets for hunting and target shooting. His designs quickly became popular with shooters of all types and the company is now a modern innovator in ammunition technology.

  13. Barnes VOR-TX 300 Winchester Magnum 165 Grain Tipped Triple-Shock X Hollow Point - 20 Rounds

    $59.85

    In stock

    Manufacturer Barnes
    Condition New
    Bullet Weight 165 Grain
    Bullet Type TTSX
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 21537
    Primer Type Boxer
    Magnetic No
    UPC Barcode 300WinMag165TTSXBARNES-20
    Cost Per Round $2.99 per round
    TTSX ammo that's as ready as you are for hunting whitetail deer. Made by Barnes, this 300 Winchester Magnum ammunition is Brass-cased, Boxer-primed with a 165 Grain bullet. These are trusted New rounds so sleep easy knowing you're picking up 20 rounds of 300 Winchester Magnum that promises reliable feeding and extraction shot after shot.
  14. Barnes VOR-TX 300 Win Mag 180 Grain TTSX BT - 20 Rounds

    $59.85

    In stock

    Manufacturer Barnes
    Condition New
    Bullet Weight 180 Grain
    Bullet Type TTSX BT
    Use Type hunting big game, hunting boar, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 21538
    Primer Type Boxer
    UPC Barcode 716876030088
    Cost Per Round $2.99 per round

    When you want something incredibly accurate with amazing range and reliability, the 300 Win Mag is the way to go. Firing with great power, this highly popular round is perfect for all your hunting needs, able to take down animals from boar to elk. In addition, with its fantastic accuracy, it makes a great match competing and range round. Whatever your needs are, the 300 Win Mag provides the long range, accurate power you need.

    Barnes has been leading the market in lead free ammunition for years, manufacturing high quality, incredibly effective, copper ammunition to help the world transition into using a cleaner, more effective type of ammo. These VOR-TX, 180 grain, TTSX boat tail, brass cased, boxer primed rounds feature copper bullets that produce massive expansion and fantastic terminal performance upon impact, making them perfect for all your boar, deer, and elk hunting needs.

  15. 300 Winchester Magnum - 180 Grain Trophy Copper Polymer Tip - Federal Premium Vital-Shok - 20 Rounds

    $59.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 180 Grain
    Bullet Type Polymer Tipped
    Use Type hunting big game, hunting boar, hunting whitetail deer
    Casing Type Nickel-Plated Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU P300WTC1
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465063542
    Cost Per Round $2.99 per round
    Quantity - 20 rounds per box
    Manufacturer - Federal Vital-Shok
    Bullets - 180 Grain Trophy Copper Polymer Tip
    Casings - Boxer-primed nickel-plated brass
  16. Federal Gold Medal 300 Winchester Magnum 190 Grain Sierra Matchking BTHP - 20 Rounds

    $62.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 190 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU GM300WM
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465091736
    Cost Per Round $3.14 per round

    The 300 Winchester Magnum is the most popular 30 caliber magnum round on the market. With incredible accuracy, power, and range, it is no wonder how this round became such a hit. Whether you need to compete in a long range match or take down deer, elk, or other North American game, the 300 Win Mag is a great choice.

    Federal has been around since 1922, making some of the best and most reliable ammunition in America. However, these Gold Metal rounds are something special. Federal loads these with the famous Sierra MatchKing projecitles. Each of these 190 grain hollow point boat tail bullets are loaded into fresh brass cases that come boxer primed and are reloadable. MatchKing projectiles have a reputation for being extremely consistent for long range target shooting and match competing. Federal Gold Medal ammo is loaded in Anoka, Minnesota.

  17. Hornady Superformance 300 Winchester Magnum 180 Grain SST Ammo - 20 rounds

    $64.85

    In stock

    Manufacturer Hornady
    Condition New
    Bullet Weight 180 Grain
    Bullet Type SST
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 82193
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255821932
    Cost Per Round $3.24 per round
    SST ammo that's as ready as you are for hunting whitetail deer. Made by Hornady, this 300 Winchester Magnum ammunition is Brass-cased, Boxer-primed with a 180 Grain bullet. These are trusted New rounds so sleep easy knowing you're picking up 20 rounds of 300 Winchester Magnum that promises reliable feeding and extraction shot after shot.
  18. Federal 300 Win Mag 180 Grain Nosler Partition - 20 Rounds

    $64.85

    In stock

    Manufacturer Federal
    Condition New
    Bullet Weight 180 Grain
    Bullet Type Nosler Partition
    Use Type hunting big game, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU P300WD2
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465084615
    Cost Per Round $3.24 per round
    300 Winchester Magnum ammo complete with Brass cases and a Nosler Partition projectile. Manufactured by Federal to the highest of standards with a Boxer primer and 180 Grain bullet, the quality components come together and add up to a round that's great for hunting big game, hunting whitetail deer. You'll get 20 rounds shipped fast when you order this today.
  19. Black Hills Match 300 Winchester Magnum 190 Grain HP-BT - 20 Rounds

    $64.85

    In stock

    Manufacturer Black Hills Ammunition
    Condition New
    Bullet Weight 190 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU D300WMN1
    Primer Type Boxer
    Magnetic No
    UPC Barcode 612710108879
    Cost Per Round $3.24 per round

    The 300 Winchester Magnum is the most popular 30 caliber magnum rifle round in the United States. Developed in 1963, the 300 Winchester Magnum has incredible accuracy, high power, and fantastic range, making it one of the best hunting and match rifles on the market. Whether you are attempting to take down some big game or win your next shooting competition, the 300 Winchester Magnum has everything you need to succeed.

    Black Hills has been around for several years and supplies match grade ammo to every branch of the United States Military, showing just how phenomenal they are. When you use these 190 grain, hollow point boat tail, Black Hills match, brass cased, boxer primed rounds, which fire at 2950 feet per second, you have the incredible accuracy, fantastic long range, flat trajectory, and increased speed you need to win any of your upcoming shooting competitions.

19 products