Black Hills 5.56x45mm CASE 77 Grain Tipped Match King – 500 Rounds (CASE) D556N19

Black Hills 5.56x45mm 77 grain Tipped MatchKing, model D556N19, sold as a 500 round case, is about as good as this cartridge gets in a factory box. Precision loaded, brass cased, and delivered in the quantity that lets you shoot it rather than save it.

There is a reason this particular load has the reputation it does among precision gas gun shooters. It simply performs, lot after lot.

What Black Hills 5.56x45mm 77 grain TMK offers

The Tipped MatchKing takes the Sierra MatchKing, a bullet that already set the standard for target work, and adds a polymer tip. The tip protects the meplat from deformation in magazines and handling, and it sharpens the bullet profile for better retained velocity.

The result is a projectile with a very high ballistic coefficient for the caliber. Wind drift is the biggest source of error past 300 yards, and a high BC 77 grain bullet cuts that error meaningfully compared to a 55 grain load.

This is for the shooter running a precision AR, a designated marksman style build, or a fast twist bolt gun who wants factory ammunition that competes with careful handloads. It is also a well regarded duty and defensive load for exactly the same consistency reasons.

Features that set this case apart

• 77 grain Tipped MatchKing bullet with a polymer tip for a high ballistic coefficient and consistent flight.
• 500 rounds per case, so a full training block or a competition season is covered in one order.
• Brass cases that reloaders can recover, prep and run again.
• Clean ignition and tight velocity spreads that keep your dope reliable at distance.
• Manufacturer model D556N19, which makes reordering the identical load straightforward.

Specifications and what your rifle needs

A case of Black Hills 5.56x45mm holds 500 rounds of 5.56x45mm NATO, 77 grain Tipped MatchKing bullets in brass cases, under model number D556N19. The bullet weight is the specification that determines whether this load will work in your rifle.

A 77 grain bullet is long, and long bullets require fast twist rifling to stabilise. You want 1:8 at minimum, and 1:7 is the ideal. A 1:9 barrel is borderline, and a 1:12 twist will not stabilise it, producing sideways keyhole marks on paper instead of round holes.

Chambering matters as well. This is loaded to 5.56x45mm NATO pressures, so it belongs in a 5.56 NATO or .223 Wylde chamber. Do not fire it in a rifle marked .223 Remington only.

Confirm magazine feeding before a match. Heavy 77 grain loads sit long in the case, and while this load is built to run from standard magazines, it is worth verifying with your own gear.

Range use, storage and care

Get on a chronograph, build real dope with this exact load, and do not borrow numbers from a lighter bullet. The whole value of buying Black Hills 5.56x45mm by the case is that your data stays valid across hundreds of rounds.

Store the case cool, dry and out of direct sun. Transfer working quantities into a sealed ammo can and leave the rest of the case sealed until you need it, which keeps humidity away from the bulk of your supply.

Keep the brass. Once fired match brass from a load like this is prime handloading stock and will give you several more accurate lives with proper trimming and annealing. If you also need cheap volume ammunition for close range drills, our ammunition category carries plenty of it.

Clean on a consistent schedule rather than an aggressive one. Precision barrels reward routine, and chasing a spotless bore between every string usually costs more accuracy than it gains. Black Hills Ammunition has earned its standing with professional users through exactly this kind of quality control.

If you shoot a fast twist .223 or 5.56 seriously, buy the Black Hills 5.56x45mm case and stop rationing your good ammunition. This ammunition ships straight to your door wherever state and local law allows.