In Stock AmmoSig SauerSold by SIG SAUER

Sig Sauer

AMMO, 300BLK, 120GR, SBR SOLID COPPER, BOX/20

120-grain .300

Blackout cartridge from SIG SAUER

Purpose-built Short

Barrel rifles

Annealed Copper

Tip for enhanced expansion upon

Tuned Full

Powder burn in barrels as

Solid Copper

Construction for barrier blind performance

$34.99
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SKU: E300H1-SBR-20

Overview

Built for compact .300 Blackout setups, this 120-grain Solid Copper load is aimed at hunters and shooters who need a cartridge suited to short barrel rifles. The design emphasizes use in close-quarters applications, with an annealed copper tip and a tuned powder charge intended to support expansion and velocity efficiency from shorter barrels. Its solid copper construction and lead-free profile make it a practical option where barrier performance and environmental or training requirements matter. This is a specialized ammunition choice, so it is best matched to firearms and use cases that align with its SBR-focused design.

Why Hunters Choose the Sig Sauer

120-grain Solid

Copper .300 Blackout cartridge purpose-built

Annealed Copper

Tip is described as enhancing

Optimized Powder

Charge and projectile design for

Solid Copper

Construction is presented as barrier

Lead-free Cartridge

Meets environmental and training requirements

Key Features

  • 120-grain .300 Blackout cartridge from SIG SAUER
  • Purpose-built for short barrel rifles
  • Annealed copper tip for enhanced expansion upon impact
  • Tuned for full powder burn in barrels as short as 7 inches
  • Solid copper construction for barrier blind performance
  • Lead-free ammunition for environmental and training requirements

Best Used For

  • Short-barrel .300 Blackout rifle owners seeking ammunition tuned for compact platforms
  • Hunters or shooters needing lead-free ammunition for training or field use
  • Users prioritizing barrier-blind performance through glass, drywall, or light sheet metal
  • Those wanting a 20-round box for range testing or limited-duty carry setups

Specifications

Annealed Copper TipYes
Barrier Blind PerformanceYes
Bullet TypeSolid Copper
Bullet Weight120 grain
Caliber.300 Blackout
Case MaterialBrass
Designed ForShort barrel rifles
Lead FreeYes
Optimized For SbrsYes
PackagingBox/20

Pros

  • 120-grain Solid Copper .300 Blackout cartridge purpose-built for short barrel rifles
  • Annealed copper tip is described as enhancing expansion upon impact
  • Optimized powder charge and projectile design for barrels as short as 7 inches
  • Solid copper construction is presented as barrier blind through glass, drywall, and light auto sheet metal
  • Lead-free cartridge meets environmental and training requirements
  • Current cases are brass

Considerations & Trade-offs

  • Optimized for short barrel rifles, so it is not the most versatile choice if you need one load for a wide range of .300 BLK setups.
  • The solid copper, lead-free design may be a better fit for users who specifically want that construction, rather than those prioritizing traditional projectile types.
  • The product is positioned for close-quarters and barrier-blind use, so it is more specialized than general-purpose .300 Blackout ammunition.
  • Ammunition sales include shipping and purchase restrictions, and returns are not accepted, so buyers should confirm compatibility and local regulations before ordering.

Suggested Comparisons

  • .300 Blackout rifle ammunition
  • Short-barrel rifle ammunition
  • Lead-free hunting ammunition
  • Barrier-blind defensive ammunition

Suggested Accessories

  • Ammunition storage box
  • Eye protection
  • Hearing protection
  • Cleaning kit

Frequently Asked Questions

Is this .300 Blackout ammunition intended for short-barrel rifles?

Yes. The product description says it is purpose-built for short barrel rifles and optimized for SBRs, with a tuned powder charge and projectile design for barrels as short as 7 inches.

What bullet weight does this ammunition use?

It is listed as a 120-grain .300 Blackout cartridge.

Is this ammunition lead-free?

Yes. The description states that it is lead-free and uses solid copper construction.

What does the product say about barrier performance?

The description says the solid copper construction is designed to retain weight through glass, drywall, and light auto sheet metal. It does not provide additional performance details beyond that.

What packaging size is offered?

The product title lists it as a box of 20 rounds.