223 (5.56) Ammo

.223 Remington ammunition and 5.56x45 NATO are closely related and sometimes interchangeable cartridges depending on the firearm they are to be used with. Manufacturers typically offer guidance on this point. In general, the 5.56 NATO ammunition the military uses and is for sale to the civilian market operates at higher pressures than .223 Remington ammo. Most, but not all, AR-15s are chambered for 5.56 NATO and can fire both types of ammo.

Many loads in both calibers follow the M193 or M855 standard, both of which are military specifications. M193 ammo typically fires a 55 grain full metal jacket bullet at 3,240 feet per second, while M855 ammo fires a heavier 62 grain FMJ bullet at about 3,100 feet per second. These common standards are very helpful when sighting in your optics and you'll find both cartridges in-stock and available in cheap bulk packs here at Widener's

Certain specialized loads deviate from these common standards. Competition grade .223/5.56 ammo fires a heavier bullet (most commonly a Sierra MatchKing) in the 77 grain range to provide better stability and more predictable trajectories; varmint loads, on the other hand, fire light 30-40 grain bullets at very high velocities to produce lethal fragmentation against pest animals.

One of the most sought after range loads for this caliber is Lake City ammunition, which is produced by Federal Premium Ammunition at the Lake City Army Ammunition Plant in Independence, Missouri. LCAAP production is typically excess from government contracts and is popular due to its military origins and high quality.

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  1. Hornady 223 Rem 53 Grain V-Max – 20 Rounds

    $27.45

    In stock

    Product Type Ammo
    Manufacturer Hornady
    Condition New
    Bullet Weight 53 Grain
    Bullet Type V-MAX
    Use Type varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU 8025
    Primer Type Boxer
    Magnetic No
    UPC Barcode 90255380255
    Cost Per Round $1.37 per round

    Hornady Superformance ammunition leverages advances in propellant technology to produce high-velocity loads that don't increase barrel wear or fouling. This higher velocity is a particularly useful advance for varmint loads, which depend on rapid fragmentation for their terminal effectiveness.

    Each .223 Remington cartridge in this 20-round box fires a 53 grain polymer-tipped V-MAX hollow point bullet at a 3,465 feet per second.

    Hornady ammo is made in Grand Island, Nebraska using non-corrosive primers and reloadable brass cases.

  2. Hornady Superformance Match 5.56x45mm 75 Grain HP-BT - 20 Rounds

    $27.75

    In stock

    Product Type Ammo
    Manufacturer Hornady
    Condition New
    Bullet Weight 75 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range, varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 5.56x45mm
    Manufacturer SKU 81264
    Primer Type Boxer
    Magnetic No
    UPC Barcode 90255812640
    Cost Per Round $1.39 per round

    These heavyweight 5.56x45mm loads stretch the limits of their caliber thanks to Hornady's Superformance Match standards. In general, Superformance loads utilize unique propellant blends to achieve muzzle velocities that are well beyond the norm; that's why these rounds launch 75-grain BTHP projectiles at 2,910 feet-per-second from a 20-inch barrel, lending them amazing range capability for match use or long-range shooting in general.

    The powder is contained within a reloadable brass casing which has a small amount of moisture-sealant in its primer pocket along with a Boxer primer; this arrangement guarantees reliable ignition under any conditions. The 75-grain BTHP at the top of the cartridge has a boat tail rear, tapered ogive, and tiny hollow tip for drag resistance which contributes to smaller groups. The bullet is built by feeding lead through the bullet's hollow point in order to build a dense core free of distortion while leaving the copper AMP jacket's pristine dimensions untouched.

  3. Hornady Non-Toxic 223 Rem 35 Grain PT – 20 Rounds

    $27.85

    In stock

    Product Type Ammo
    Manufacturer Hornady
    Condition New
    Bullet Weight 35 Grain
    Bullet Type NTX
    Use Type varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU 83266
    Primer Type Boxer
    Magnetic No
    UPC Barcode 90255832662
    Cost Per Round $1.39 per round

    Developed during the Vietnam War, the 223 Rem has become one of the most popular rounds in the Western World among militaries, civilians, and law enforcement. Whatever your needs are, whether they be hunting medium game, eradicating varmints, defending your home, or competing in a shooting competition, the 223 Rem is the perfect round for you with its fantastic, low recoil, phenomenal accuracy, and amazing speed.

    Hornady has been around since the end of World War Two and has come to be one of the most innovative ammunition providers in the world, making just the high quality and effective ammo you need. These Hornady Non-Toxic, 35 grain, polymer tipped rounds fire at the incredible velocity of 4000 feet per second and produce massive expansion and have fantastic terminal performance, making these the perfect rounds for taking out even the speediest varmints out there.

  4. Federal Gold Medal 223 Rem 77 Grain HPBT MatchKing – 200 Rounds

    $279.85

    In stock

    Product Type Ammo
    Manufacturer Federal
    Condition New
    Bullet Weight 77 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range, varmint hunting
    Casing Type Brass
    Quantity 200
    Ammo Caliber 223 Remington
    Manufacturer SKU GM223M3
    Primer Type Boxer
    Magnetic No
    UPC Barcode 20029465094205
    Cost Per Round $1.4 per round
    This is a great round for match or precision shooting, plinking at the range, varmint hunting. From Federal, this 223 Remington ammunition is New with a Hollow-Point Boat Tail (HP-BT) 77 Grain bullet. You'll get 200 rounds of Brass cased ammo that's ready for your next trip out to shoot. Like every round for sale, we stand behind this ammo and have your back so rest assured you're not only getting a good deal, you're getting the peace of mind that comes along with a trusted supplier.
  5. Hornady Critical Defense 223 Rem 55 Grain FTX – 20 Rounds

    $28.85

    In stock

    Product Type Ammo
    Manufacturer Hornady
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Flex-Tip-Technology (FTX)
    Use Type home defense
    Casing Type Nickel-Plated Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU 80270
    Primer Type Boxer
    Magnetic No
    UPC Barcode 90255802702
    Cost Per Round $1.44 per round
    This 223 Rem cartridge from Hornady’s Critical Defense line of ammunition is optimized in every way to help you keep your home uninfluenced by burglars. The round’s 55 grain FTX projectile features the Flex Tip, which compresses into the bullet upon impact in order to initiate rapid expansion. The Flex Tip works reliably even at lower velocities, and optimizes performance in lever action rifles as well.

    The FTX bullet also features an InterLock ring, which mechanically locks its high antimony lead core and specially engineered heavy jacket together to provide stellar weight retention during penetration. This bullet additionally offers a flat trajectory and great accuracy thanks to its secant ogive profile.

    Thanks to this round’s casing’s nickel plating, it’s very easy to spot during a chamber check in a darkened environment. Furthermore, its specially formulated propellant reduces both recoil and muzzle flash, so you can count on firing rapid follow-up shots in the dark as well.
  6. Black Hills Barnes Multi-Purpose Green 223 Rem 55 Grain HP - 50 Rounds

    $72.85

    In stock

    Product Type Ammo
    Manufacturer Black Hills Ammunition
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Frangible
    Use Type steel target plinking
    Casing Type Brass
    Quantity 50
    Ammo Caliber 223 Remington
    Manufacturer SKU M223N16
    Primer Type Boxer
    Magnetic No
    UPC Barcode 612710124503
    Cost Per Round $1.46 per round

    Grab a few of these 50-round boxes of .223 Remington ammo from Black Hills for tactical training and home defense with your AR-15 or other .223/5.56 NATO chambered rifle. These cartridges fire Barnes Multi Purpose Green (MPG) frangible bullets. Unlike other frangible projectiles, Multi Purpose Green bullets have a gilding metal jacket that protects the powdered copper-tin core. This ensures reliable cycling alongside heavy fragmentation upon impact. The fragmenting effect virtually eliminates the risk of ricochets for safe training while delivering strong terminal performance for varmint hunting or self-defense emergencies.

    Each cartridge in this box fires a 55-grain version of the MPG at a muzzle velocity of 3,150 feet per second. In terms of external ballistics, this ammo is roughly comparable to M193 mil-spec ball and should not require large adjustments to optics for users of either M193 or M855 ammo.

    Black Hills ammunition is made in the USA using non-corrosive primers and brass cases.

    Customer Reviews

    very quick shipping

    quick shipping

    Review by charles (Posted on 8/16/2020)

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