Blackout Silverback 9MM 115gr, Self Defense, 20 Round Box

The Blackout Silverback 9MM 115gr, Self Defense, 20 Round Box is a 9mm load held in stock. What follows is the practical version: construction, velocity, and who it suits.

Specifications

Cartridge	9mm
Bullet weight	115 grain
Projectile	Solid Copper Subsonic
Bullet diameter	.355
Typical muzzle velocity	1,000 to 1,250 fps
Usual twist rate	1:10
Platform	pistol and PCC
Rounds per pack	20
SKU	SB9115SD
Price	$39.99
Cost per round	$2.000

How the solid copper subsonic projectile behaves

This is a a solid copper design intended for subsonic velocities, where conventional lead hollow points typically fail to open.

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

What 9MM is good at

Standard pressure loads sit near the sound barrier, so subsonic-specific loads matter for suppressed use.

Muzzle velocity for 9mm typically runs 1,000 to 1,250 fps, from a pistol and PCC platform with a 1:10 twist. Treat any published velocity as indicative. Your barrel will give you a different number, and that number is the one that matters.

Why this grain weight

At 115 grain this is on the lighter side for 9mm. 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 and cost per round

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.

Compliance

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

Before buying, be honest about the use case. This suits suppressed shooting, where staying under the sound barrier is the whole point and bullet design has to compensate for low velocity.

Barrel length matters

The same load behaves differently across barrel lengths. If you run a short barrel, verify performance rather than assuming it carries over. For 9mm specifically, expect 1,000 to 1,250 fps as the published band and treat your own chronograph as the authority.

Keeping it serviceable

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

See also

Browse 9mm ammunition for other weights and projectile types, or run your setup through the ballistics calculator.

Where 9mm sits

Against .45 ACP it gives up frontal area and gains capacity, flatter trajectory and much cheaper practice. Against .380 ACP it is simply more cartridge in every respect.

Cartridge arguments usually come down to people optimising for different things without saying so. Decide what you are optimising for first.

What arrives

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

Which twist rate does 9mm need?

1:10 is standard. Standard pressure loads sit near the sound barrier, so subsonic-specific loads matter for suppressed use.

Is the published 9mm velocity accurate?

It is indicative. Expect 1,000 to 1,250 fps as a range, and verify with a chronograph.

Is the solid copper subsonic projectile suitable for what I am shooting?

It is a a solid copper design intended for subsonic velocities, where conventional lead hollow points typically fail to open. Match that against your intended use before buying.

Why choose 115 grain?

Weight sets the trade between velocity and momentum. 115 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.

Is this a backorder?

No. This is stocked inventory, not a backorder or a pre-sale.

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.

Do you offer bulk pricing?

Larger pack sizes carry a lower cost per round, which is listed on each product page so you can compare directly rather than doing the arithmetic yourself.

Do you sell remanufactured ammunition?

No. Everything listed is sealed factory ammunition.