Underwood 458 HAMR 300gr Ballistic Tip – Powerful Hunting Ammo

Description

The Underwood 458 HAMR 300gr Ballistic Tip load, Underwood item 465, is 458 HAM’R rifle ammunition loaded with a 300 grain Nosler Ballistic Tip spitzer bullet at 2100 fps. It brings big bore hunting power to a compact AR-15 platform rifle, 20 rounds per box.

Underwood 458 HAMR 300gr Ballistic Tip Overview

Underwood Ammo is a family-run ammunition maker in Sparta, Illinois, known for loads that run at the top of what each cartridge can safely do. Underwood tests its ammunition in real firearms that customers own, rather than only in laboratory barrels, and uses flash suppressed powders across its line. This 458 HAM’R load pairs that approach with one of the most trusted hunting bullets made.

The 458 HAM’R Cartridge

The 458 HAM’R was developed by Wilson Combat to put a true big bore hunting round in an AR-15 sized rifle. It launches heavy 45 caliber bullets faster than the 458 SOCOM, which flattens trajectory and adds energy at hunting distances. Note that it is a separate cartridge: do not fire 458 HAM’R ammunition in a rifle chambered for 458 SOCOM, or the other way around.

Nosler Ballistic Tip Bullet

The Nosler Ballistic Tip uses a polymer tip that improves the bullet’s shape in flight and starts expansion on impact. A tapered jacket controls how far the bullet opens, so it expands quickly while still carrying a heavy 300 grain bullet deep enough for large game. The streamlined tip also helps it hold velocity better than flat nose or round nose big bore bullets.

Intended Use

This load is built for hunting. A 300 grain bullet at 2100 fps carries the weight and energy for whitetail, feral hogs and black bear at the short to medium ranges where a big bore AR shines, such as thick woods, swamps and bottomland. It is also a strong choice for anyone who wants one rifle that can handle tough, close-range game.

Recoil and Handling

Big bore AR cartridges recoil more than a 223, but the gas system and weight of an AR-15 help soak up much of the push. Many shooters find the 458 HAM’R comfortable to shoot from the bench and quick to bring back on target, especially with a good muzzle brake or suppressor.

Accuracy and Zero

Heavy bullets drop faster than light rifle bullets, so zero your rifle with the exact load you plan to hunt with and learn its holdovers at 150 and 200 yards. A few groups before the season will show how this load performs in your rifle.

Hunting Ethics

Know your effective range and take only shots you are confident of making. Carry enough ammunition for follow-up shots, wear blaze orange where required, and confirm that your state allows the cartridge for the game you are hunting.

Storage and Care

Store ammunition in a cool, dry place in its original boxes, away from solvents and lubricants that can contaminate primers. Inspect each round before loading, and set aside any with dented cases, loose bullets or corrosion.

Specifications

• Brand: Underwood Ammo
• Item number: A465
• Caliber: 458 HAM’R
• Bullet weight: 300 grain
• Bullet type: Nosler Ballistic Tip spitzer, polymer tipped
• Muzzle velocity: 2100 fps
• Count: 20 rounds per box
• UPC: 816874023560
• Note: not for use in firearms chambered in 458 SOCOM
• Photo note: gallery photos show Underwood’s 458 SOCOM 300 grain Ballistic Tip load and Underwood’s 458 HAM’R packaging, included to show the bullet and box style.

Before You Buy

Federal law requires buyers of rifle ammunition to be at least 18 years old when buying from a licensed dealer. Some states and cities restrict ammunition purchases, require background checks or limit shipping, so check your local rules before you order.

Who It Is For

The Underwood 458 HAMR 300gr Ballistic Tip is a great fit for 458 HAM’R owners who want a fast, expanding big bore hunting load for deer, hogs and bear.

Buy the Underwood 458 HAMR 300gr Ballistic Tip at MAG5 Firearms

MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Underwood 458 HAMR 300gr Ballistic Tip online and we will ship it to you where state and local law allow, or browse our full selection of ammunition for more rifle loads. For factory details, visit Underwood Ammo.