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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14 products

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  1. Prvi Partizan 300 Winchester Magnum 150 Grain SP - 20 Rounds

    $28.85

    In stock

    Manufacturer Prvi Partizan
    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 PP3001
    Primer Type Boxer
    Magnetic No
    UPC Barcode 8605003800392
    Cost Per Round $1.44 per round

    Bring down large game with your trusty .300 Winchester Magnum rifle and this .300 Win Mag ammunition from Prvi Partizan. These cartridges deliver the power and accuracy that this caliber is known for at a very reasonable cost.

    Each cartridge in this box of 20 fires a 150 grain soft point projectile at a muzzle velocity of 3,250 feet per second. This combination of a relatively light bullet fired at a high velocity excels at bringing down medium sized targets with rapid expansion. Soft point bullets rely on "mushrooming" expansion to create large, lethal wound channels; however, their lack of fragmentation helps limit damage to meat, a notable advantage for many hunters.

    Prvi Partizan ammo is loaded in Uzice, Serbia using non corrosive Boxer primers and brass cases. From its establishment in the 1920s, PPU has been making ammunition for hunters as well as fulfilling military contracts; its ammo is well regarded as both reliable and affordable.

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

    $33.85

    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 $1.69 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.
  3. Remington Core-Lokt 300 Winchester Magnum 150 Grain PSP – 200 Rounds

    $339.85

    In stock

    Manufacturer Remington
    Condition New
    Bullet Weight 150 Grain
    Bullet Type Pointed Soft-Point (PSP)
    Use Type hunting big game, hunting whitetail deer
    Casing Type Brass
    Quantity 200
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU R300W1
    Primer Type Boxer
    Magnetic No
    UPC Barcode 047700055718
    Cost Per Round $1.70 per round
    Are you tired of trying to beat whitetails to death using nothing but taekwondo? There’s a much easier way: a 300 Winchester Magnum rifle! It’s time to put down your black belt and chamber a belted magnum, and we’ll make it easy by shipping you a case of Remington Core-Lokt ammunition!

    This cartridge’s Core-Lokt bullet is a pointed soft point. Once it attains a muzzle velocity of 3,290 fps, the PSP’s aerodynamic frontal profile, uniformly distributed lead core and concentric copper jacket all contribute to its 0.294 G1 ballistic coefficient. The 150 grain bullet doesn’t undergo transonic destabilization until after it has passed 850 yards, so you can make those sweet long-range shots so long as you’ve got the marksmanship for the task.

    The Core-Lokt’s copper jacket extends into its dense lead core, locking the two components together to reduce fragmentation, promote greater weight retention, and ensure deep enough penetration for a fast and humane kill. The Core-Lokt PSP also reliably delivers 2X terminal expansion that maximizes hydrostatic shock and wound channel diameter! This brass-cased and reloadable ammo is manufactured at Remington’s Arkansas factory – American-made, just like the company itself.
  4. Remington Core-Lokt 300 Win Mag 180 Grain PSP - 20 Rounds

    $35.85

    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 $1.79 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!
  5. 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.
  6. Remington Core-Lokt 300 Winchester Magnum 150 Grain PSP - 20 Rounds

    $35.85

    In stock

    Manufacturer Remington
    Condition New
    Bullet Weight 150 Grain
    Bullet Type Pointed Soft-Point (PSP)
    Use Type hunting big game, hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU R300W1
    Primer Type Boxer
    Magnetic No
    UPC Barcode 047700055701
    Cost Per Round $1.79 per round
    Pointed Soft-Point (PSP) ammo that's as ready as you are for hunting big game, hunting whitetail deer. Made by Remington, this 300 Winchester Magnum ammunition is Brass-cased, Boxer-primed with a 150 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.
  7. Hornady American Whitetail 300 Winchester Magnum 180 Grain InterLock – 20 Rounds

    $38.85

    In stock

    Manufacturer Hornady
    Condition New
    Bullet Weight 180 Grain
    Bullet Type Spire Point
    Use Type hunting whitetail deer
    Casing Type Brass
    Quantity 20
    Ammo Caliber 300 Winchester Magnum
    Manufacturer SKU 82044
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255820447
    Cost Per Round $1.94 per round
    Long-range deer hunters will love the reach and power of this .300 Winchester Magnum ammunition from Hornady's American Whitetail series. These cartridges feature the Interlock soft point bullet, which is named for the locking ring that keeps the core and jacket tightly bound together for superior weight retention.

    Each cartridge in this box of 20 fires a 180 grain version of the Interlock at a muzzle velocity of 2,960 feet per second. The soft point projectile offers excellent mushrooming without the fragmentation and meat loss associated with hollow points.

    Hornady ammunition is loaded in Grand Island, Nebraska using non-corrosive Boxer primers and reloadable brass cases.
  8. 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.

  9. 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.
  10. Barnes VOR-TX 300 Winchester Magnum 165 Grain Tipped Triple-Shock X Hollow Point - 20 Rounds

    $55.85

    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 $2.79 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.
  11. 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!
  12. 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!
  13. 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.

  14. 300 Win Mag - 200 Grain ELD-X - Hornady Precision Hunter - 20 Rounds

    $64.85

    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 $3.24 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.

14 products