Blackout Silverback 45ACP 230gr, Self Defense, 20 Round Box

Blackout Silverback 45ACP 230gr, Self Defense, 20 Round Box is stocked here in its .45 ACP chambering. The detail below is what actually matters when you are choosing between loads.

Specifications

Cartridge	.45 ACP
Bullet weight	230 grain
Projectile	Solid Copper Subsonic
Bullet diameter	.451
Typical muzzle velocity	830 to 1,000 fps
Usual twist rate	1:16
Platform	pistol and pistol carbine
Rounds per pack	20
SKU	SB45230SD
Price	$31.99
Cost per round	$1.599

Terminal behaviour of the solid copper subsonic design

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.

.45 ACP in practice

Naturally subsonic in standard loadings, which makes it one of the easiest cartridges to suppress well.

Muzzle velocity for .45 ACP typically runs 830 to 1,000 fps, from a pistol and pistol carbine platform with a 1:16 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 230 grain this sits at the heavy end of the .45 ACP range. Heavier bullets carry momentum further, buck wind better and penetrate more, and they pay for it with a steeper arc and more felt recoil. If your shots are inside normal hunting distance and you want penetration, this is the end you want.

Pack size and cost per round

20 rounds at $31.99 works out at $1.599 per round. A box this size suits load development, hunting stock and defensive carry rather than high volume practice.

Shipping and legal notes

Ammunition ships within the United States subject to state and municipal restriction. Some jurisdictions require licensing or prohibit delivery outright, and buyers must meet age and eligibility requirements where they live. See our shipping and delivery page for the current detail.

Is this the right load for you

The question is not whether this is a good load, it is whether it is the right one for you. 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

Do not assume box velocity applies to your barrel. Published figures usually come from long test barrels, and real rifles run slower. For .45 ACP specifically, expect 830 to 1,000 fps as the published band and treat your own chronograph as the authority.

Storing ammunition

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

Related ammunition

Browse .45 ACP ammunition for other weights and projectile types, or run your setup through the ballistics calculator.

How .45 ACP compares

Against 9mm it delivers a larger frontal area at lower velocity and naturally subsonic speed, at the cost of magazine capacity and ammunition price.

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

What we ship

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.

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

Which twist rate does .45 ACP need?

1:16 is standard. Naturally subsonic in standard loadings, which makes it one of the easiest cartridges to suppress well.

Is the published .45 ACP velocity accurate?

It is indicative. Expect 830 to 1,000 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 230 grain?

Weight sets the trade between velocity and momentum. 230 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 $31.99, which is $1.599 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.

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.

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 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.