Blackout Ammunition .300 Blackout 147gr FMJ, 20 Round Box

The Blackout Ammunition .300 Blackout 147gr FMJ, 20 Round Box is a 300 Blackout load held in stock. What follows is the practical version: construction, velocity, and who it suits.

Specifications

Cartridge	300 Blackout
Bullet weight	147 grain
Projectile	Full Metal Jacket
Bullet diameter	.308
Typical muzzle velocity	1,000 fps subsonic, 2,100 to 2,300 fps supersonic
Usual twist rate	1:7 to 1:8
Platform	AR-15
Rounds per pack	20
SKU	GA300147FMJ
Price	$32.99
Cost per round	$1.650

What this full metal jacket bullet is built to do

This is a a training and volume shooting projectile. It does not expand, so it is a poor choice for hunting or defence, and an economical one for practice.

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

300 Blackout in practice

Full powder burn by roughly 9 inches, which is why it dominates short barrel builds.

Muzzle velocity for 300 Blackout typically runs 1,000 fps subsonic, 2,100 to 2,300 fps supersonic, from a AR-15 platform with a 1:7 to 1:8 twist. Expect real world variation against those figures. A chronograph and ten rounds will tell you more than any spec sheet.

Why this grain weight

At 147 grain this is on the lighter side for 300 Blackout. 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 $32.99 works out at $1.650 per round. A box this size suits load development, hunting stock and defensive carry rather than high volume practice.

Shipping and legal notes

Ammunition is not a firearm under federal law, but shipping is restricted in a number of states and municipalities, and some require a licence or an approved recipient. Buyers must be of legal age and legally permitted to possess ammunition where they live. See our shipping and delivery page for the current detail.

Is this the right load for you

Loads are tools, not rankings. This is practice and volume ammunition. It does not expand, which makes it economical for training and unsuitable for hunting or defence.

Barrel length and velocity

Barrel length changes the numbers. Short barrels give up velocity that light bullets in particular depend on, so a load that performs from 20 inches may disappoint from 16. For 300 Blackout specifically, expect 1,000 fps subsonic, 2,100 to 2,300 fps supersonic as the published band and treat your own chronograph as the authority.

Storing ammunition

Store it dry and cool, rotate oldest stock first, and check case necks for corrosion on anything that has sat a long time.

Browse more

Browse our 300 Blackout ammunition for other weights and projectile types, or run your setup through the ballistics calculator.

How 300 Blackout compares

Against 5.56 it gives up range and gains suppressed performance and short barrel efficiency. Against 8.6 Blackout it gives up roughly half the subsonic energy and gains an AR-15 platform and far cheaper ammunition.

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

Stock and handling

What ships is sealed factory ammunition, stored indoors and rotated so the oldest stock moves first. Packing is chosen to stop cartridges moving inside the box.

A word if you are stocking up: test before you commit. Buying a case of a load your rifle dislikes is an expensive way to learn about harmonics.

Frequently asked questions

What platform suits 300 Blackout?

A AR-15 with a 1:7 to 1:8 twist is the usual setup. Full powder burn by roughly 9 inches, which is why it dominates short barrel builds.

How fast does 300 Blackout run?

Around 1,000 fps subsonic, 2,100 to 2,300 fps supersonic at the muzzle, though your barrel will give you its own number.

Is the full metal jacket projectile suitable for what I am shooting?

It is a a training and volume shooting projectile. It does not expand, so it is a poor choice for hunting or defence, and an economical one for practice. Match that against your intended use before buying.

Why choose 147 grain?

Weight sets the trade between velocity and momentum. 147 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 $32.99, which is $1.650 per round.

Is this load in stock?

Yes. Everything on this page is held in stock and ships from the United States. Sold out lines are updated rather than left live.

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.

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.

How is this stored before it ships?

Indoors at stable temperature, rotated oldest first, and packed so cartridges do not move in transit.