Blackout Ammunition COSMETIC BLEM .223 Rem 77gr Sierra MatchKing©, 20 Round Box

The Blackout Ammunition COSMETIC BLEM .223 Rem 77gr Sierra MatchKing©, 20 Round Box is a .223 Remington load held in stock. What follows is the practical version: construction, velocity, and who it suits.

Specifications

Cartridge	.223 Remington
Bullet weight	77 grain
Projectile	Match Hollow Point Boat Tail
Bullet diameter	.224
Typical muzzle velocity	2,700 to 3,240 fps depending on bullet weight and barrel
Usual twist rate	1:7 to 1:9
Platform	AR-15
Rounds per pack	20
SKU	GA22377SMK-1
Price	$23.99
Cost per round	$1.200

How the match hollow point boat tail projectile behaves

This is a a target design chosen for consistency rather than terminal effect. The hollow point is a manufacturing artefact of the jacket drawing process, not an expansion mechanism, so it should not be selected as a hunting bullet.

Bullet weight and bullet construction get conflated constantly. Weight sets trajectory and momentum; construction sets what happens on impact.

.223 Remington in practice

Light-for-calibre bullets rely on velocity rather than mass, so barrel length matters more here than in most cartridges.

Muzzle velocity for .223 Remington typically runs 2,700 to 3,240 fps depending on bullet weight and barrel, from a AR-15 platform with a 1:7 to 1:9 twist. Barrel length, lot and temperature all move that figure, so verify it in your own rifle rather than relying on the box.

Why this grain weight

At 77 grain this is on the lighter side for .223 Remington. Lighter bullets leave the muzzle faster and shoot flatter, which helps on smaller targets and at distance, but they bleed velocity sooner and depend more on impact speed to do their job.

What you get for the money

20 rounds at $23.99 works out at $1.200 per round. A box this size suits load development, hunting stock and defensive carry rather than high volume practice.

Compliance

Federal law does not class ammunition as a firearm, yet several states and cities restrict or licence ammunition shipments. You must be of legal age and eligible to possess ammunition at your delivery address. See our shipping and delivery page for the current detail.

Is this the right load for you

Loads are tools, not rankings. This is a target and load development projectile. It is not a hunting bullet, and choosing it for game is the single most common mistake with this bullet line.

What your barrel does to these numbers

Velocity scales with barrel length, and the effect is largest on lighter, faster bullets. Check what your own barrel actually delivers. For .223 Remington specifically, expect 2,700 to 3,240 fps depending on bullet weight and barrel as the published band and treat your own chronograph as the authority.

Keeping it serviceable

Storage is simple: stable temperature, low humidity, original packaging where possible. Attics and car boots are the two places that quietly ruin ammunition.

Related stock

Browse .223 and 5.56 ammunition for other weights and projectile types, or run your setup through the ballistics calculator.

.223 Remington against the alternatives

Against 5.56 NATO it is the lower pressure sibling, and against 6mm ARC or 6.5 Grendel it gives up downrange energy in exchange for cheaper ammunition and far wider availability.

None of that makes one cartridge better in the abstract. It makes them better at different jobs, and the job is yours to define.

How this is stored

We stock factory loaded ammunition only, no remanufactured or reloaded product. Stock is stored indoors, rotated oldest first, and packed to keep projectiles protected on the way to you.

If this is your first purchase in this calibre, buy one box before you buy ten. Rifles are individual, and a load that groups beautifully in one barrel can string in another for no obvious reason.

Frequently asked questions

What rifle does .223 Remington run in?

.223 Remington is normally chambered in a AR-15 platform with a 1:7 to 1:9 twist. Light-for-calibre bullets rely on velocity rather than mass, so barrel length matters more here than in most cartridges.

Is the published .223 Remington velocity accurate?

It is indicative. Expect 2,700 to 3,240 fps depending on bullet weight and barrel as a range, and verify with a chronograph.

Is the match hollow point boat tail projectile suitable for what I am shooting?

It is a a target design chosen for consistency rather than terminal effect. The hollow point is a manufacturing artefact of the jacket drawing process, not an expansion mechanism, so it should not be selected as a hunting bullet. Match that against your intended use before buying.

Why choose 77 grain?

Weight sets the trade between velocity and momentum. 77 grain is one point on that curve; the right pick depends on your barrel, your distance and your target rather than on the number itself.

What is in the pack?

20 rounds at $23.99, which is $1.200 per round.

Do you actually have this in stock?

Yes, this is held stock rather than drop shipped, and the listing comes down when it sells out.

Do I need a licence to buy this?

In most of the country no, but some states and cities require a licence or an approved recipient for ammunition. The shipping page has the detail.

Can I reload this brass?

Most of our loaded ammunition uses reloadable boxer primed brass. Check the individual listing if you intend to reload, since some training and steel cased lines are not reloadable.

Do you sell components for this cartridge?

We stock projectiles and brass for several of our calibres alongside loaded ammunition. Check the projectiles and brass category for what is currently available.

Do you sell remanufactured ammunition?

No. Everything listed is sealed factory ammunition.