Blackout Ammunition .308 WIN 175gr Sierra MatchKing©, 20 Round Box

Blackout Ammunition .308 WIN 175gr Sierra MatchKing©, 20 Round Box, in stock and shipping now. If you already know .308 Winchester, skip to the specifications; if not, the buying notes below are the useful part.

Specifications

Cartridge	.308 Winchester
Bullet weight	175 grain
Projectile	Match Hollow Point Boat Tail
Bullet diameter	.308
Typical muzzle velocity	2,400 to 2,800 fps
Usual twist rate	1:10 to 1:12
Platform	AR-10 or bolt
Rounds per pack	20
SKU	GA308175SMK
Price	$39.99
Cost per round	$2.000

Terminal behaviour of the match hollow point boat tail design

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.

The number on the box tells you mass, not behaviour. Jacket design, alloy and geometry are what determine the wound channel.

.308 Winchester in practice

The reference cartridge for .30 calibre performance, with the widest bullet selection of any rifle round.

Muzzle velocity for .308 Winchester typically runs 2,400 to 2,800 fps, from a AR-10 or bolt platform with a 1:10 to 1:12 twist. Expect real world variation against those figures. A chronograph and ten rounds will tell you more than any spec sheet.

Where this weight sits

At 175 grain this is on the lighter side for .308 Winchester. 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.

Pack size

20 rounds at $39.99 works out at $2.000 per round. A box this size suits load development, hunting stock and defensive carry rather than high volume practice.

Ordering and compliance

Shipping rules for ammunition vary by state and sometimes by city. Some destinations require a licence, an approved recipient, or refuse delivery entirely. Check before you order rather than after. See our shipping and delivery page for the current detail.

Who this load suits

Match the load to the job rather than the price. 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 .308 Winchester specifically, expect 2,400 to 2,800 fps as the published band and treat your own chronograph as the authority.

Keeping it serviceable

Keep cartridges cool, dry and at stable temperature. Heat cycling in a garage or vehicle does more damage over time than age does, and factory packaging protects bullet tips from knocking together.

See also

Browse the .308 Winchester range for other weights and projectile types, or run your setup through the ballistics calculator.

Choosing .308 Winchester over something else

Against 6.5 Creedmoor it gives up ballistic coefficient and wind performance, and gains bullet selection, brass availability and lower cost. Against .30-06 it gives up a little case capacity in a shorter action.

Pick the cartridge that fits the shooting you actually do, not the shooting you read about.

What arrives

This is genuine factory ammunition, held in a climate stable stockroom rather than a container. Orders are picked from sealed cases and packed so nothing shifts in transit.

New to this cartridge? Start with a single box. Barrel to barrel variation is real, and the only way to know how a load performs in your rifle is to shoot it.

Frequently asked questions

What platform suits .308 Winchester?

A AR-10 or bolt with a 1:10 to 1:12 twist is the usual setup. The reference cartridge for .30 calibre performance, with the widest bullet selection of any rifle round.

How fast does .308 Winchester run?

Around 2,400 to 2,800 fps at the muzzle, though your barrel will give you its own number.

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 175 grain?

Weight sets the trade between velocity and momentum. 175 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 $39.99, which is $2.000 per round.

How quickly does this ship?

It is in stock and ships from the United States. Processing times and carrier detail are on the shipping page.

Are there places you cannot ship ammunition?

Yes. A number of states and municipalities restrict or licence ammunition delivery. Check the shipping page for the current list before ordering.

How should I compare loads?

Compare cost per round rather than box price, and compare projectile construction rather than grain weight. Those two habits will steer you right more often than brand loyalty.

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.

Will this arrive in original packaging?

Yes, in the manufacturer’s packaging, boxed so nothing shifts on the way to you.