Hornady SUPERFORMANCE GMX Ammunition 223 Remington 55 Grain GMX Boat Tail Lead-Free Box of 20
You must be 21 years or older to order ammunition. Ammo must ship UPS ground. Due to Department of Transportation regulations, we cannot accept returns on ammo. Please check local laws before ordering.
- Videos (2)
SUPERFORMANCE ammunition is loaded with proprietary propellants that increase the velocity ratings up to 200 feet per second compared to other popular brands. Because there is no increase in pressure, regardless of the caliber, there is no increase in felt recoil but there IS an increase in efficiency and high speed performance. From sub-zero arctic temperatures to almost unbearable desert heat, SUPERFORMANCE ammunition can withstand any hunting habitat.
Hard-hitting and deep-penetrating, the GMX bullet combines monolithic construction with pioneering ballistic design to meet the need for a premium, non-traditional bullet. The mono-metal design of the GMX bullet is crafted from a copper alloy. Harder than solid copper, the copper/zinc alloy has been proven to shoot cleaner, foul less, and deliver consistent, even pressure curves. The tough alloy material routinely retains 95% or more of its original weight and expands up to 1.5 times its original diameter. Featuring a long, sleek profile with cannelures, the design reduces the bullet’s overall bearing surface and drag, while achieving some of the highest ballistic coefficients from monolithic, non-traditional bullets. Initiating expansion upon impact, the hard polymer tip drives into the hollow cavity at the front of the bullet, creating a mushroom-style projectile as it travels through the animal. Fully California compatible and appropriate for use in other areas requiring the use of non-traditional bullets, GMX is ideal for any sized game, from antelope to moose. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.
- Caliber: 223 Remington
- Bullet Weight: 55 Grains
- Bullet Style: Gilding Metal Expanding
- Case Type: Brass
- Muzzle Veloctiy: 3275 fps
- Muzzle Energy: 1310 ft. lbs.
The total weight of the product, including the product’s packaging as it sits on our shelf. Since some products ship directly from the Manufacturer, their weight may be unavailable. Because of variations in the manufacturing process, similar products may have differing weights. Unless the product is designated as “Ships Alone”, Shipping Weight does not include the shipping box or packing materials associated with your order.
Product ships from MidwayUSA, separate from any other products on your order due to its size. Products that are Shipped Alone incur separate "Per Order" and "Per Pound" shipping charges.
Product is regulated by the US Department of Transportation (DOT) and cannot be shipped via USPS or air shipping methods. DOT-Regulated products must ship UPS Ground.
Product is restricted by shipping carriers and cannot be shipped to certain locations or via certain shipping methods.
- Cannot ship via air
- Cannot ship via USPS
- Cannot ship to PO Box
Additional shipping charge for HazMat products. Carriers charge extra to ship packages with products they consider hazardous, such as reloading powder and primers.
Thank you! Your valuable feedback helps improve our product information and offering.
The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.
Hornady SUPERFORMANCE Ammunition 5.56x45mm NATO 55 Grain GMX...
Hornady Training Ammunition 223 Remington 55 Grain Full Metal...
$30.99 - $309.99
Hornady Full Boar Ammunition 223 Remington 50 Grain GMX Boat...
Winchester Supreme Ammunition 223 Remington 55 Grain Ballistic...
$16.30 - $162.35Clearance Save up to $87.64 (35%)
Nosler Varmageddon Ammunition 223 Remington 55 Grain Tipped...
Ultramax Remanufactured Ammunition 223 Remington 50 Grain...
Remington Premier Varmint Ammunition 223 Remington 50 Grain...
HSM Remanufactured Ammunition 223 Remington 55 Grain Sierra...
$28.99 - $109.99
TAPCO Magazine Mini-14 223 Remington 30-Round Polymer
Smith & Wesson Magazine S&W M&P Shield 9mm Luger Stainless Steel
Tetra Gun Grease 1 oz Tube
MTM Ammunition Can Plastic
$13.99 - $14.99
Birchwood Casey S&F Gun Stock Clear Sealer & Filler 3 oz
$4.99Sale Save $1.00 (17%)
Barnes VOR-TX Ammunition 223 Remington 55 Grain Triple-Shock X...
Loctite 242 Threadlocker Blue
$1.99 - $9.99
BlackHawk Mountain Sling
Birchwood Casey Tru-Oil Stock Finish Kit
$12.99Sale Save $2.00 (13%)
Magpul MOE-K Pistol Grip AR-15
$7.99List Price: $10.99 Save $3.00 (27%)
Volquartsen Recoil Buffer Ruger 10/22, 10/22 Magnum
MidwayUSA Buttstock Rifle Ammunition Carrier Black
$5.99List Price: $9.99 Save $4.00 (40%)
Maglula LULA Magazine Loader and Unloader AR-15 223 Remington...
Add to Cart for PriceSale List Price: $26.95
AR-Stoner Magazine AR-15 223 Remington with Anti Tilt Follower...
$11.89 - $18.99Sale — Select Items Save up to $8.00 (30%)
Caldwell Orange Peel Targets 8" Self-Adhesive Bullseye
$3.99 - $49.99List Price: $5.49 - $52.99 Save up to $4.00 (22%)
MTM Survivor Ammunition Can Plastic Black
Caldwell Orange Peel 8" Self-Adhesive Sight-In Target
$3.99 - $30.99Save up to $1.50 (27%)