ReloadingBarnes BulletsSold by Brownells

Barnes Bullets

Barnes Triple Shock X 450 Bushmaster (0.451'''') Bullets - 45 Caliber (0.451'''') 275gr Tsx Flat Base 20/Box

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Lead-free, 100%

Copper-constructed bullet

450 Bushmaster

45 caliber (.451") applications

275-grain Tsx

Flat base bullet

Triple-shock Design

Precisely positioned rings

Grooves Help

Relieve firing pressure and reduce

$23.99
List Price: $29.99
You Save: $6.00 (20%)
View on Brownells

You'll be taken to Brownells to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: 100032976

Overview

Built for hunters loading .450 Bushmaster rifles, this Barnes bullet is designed for big-game applications where deep penetration is a priority. Its lead-free, 100% copper construction and Triple-Shock design are intended to support controlled performance through dense tissue and heavy bone, while the ringed body helps reduce firing pressure and copper fouling. Packaged 20 per box, it suits hunters who want a premium hunting bullet for serious field use without relying on lead.

Why Hunters Choose the Barnes Bullets

Lead-free, 100%

Copper construction

Triple-shock Design

Precision-cut rings

Grooves Help

Relieve firing pressure

Designed Reduce

Copper fouling

20 Bullets

Per box for hunting use

Key Features

  • Lead-free, 100% copper-constructed bullet
  • Designed for 450 Bushmaster and 45 caliber (.451") applications
  • 275-grain TSX flat base bullet
  • Triple-Shock design with precisely positioned rings
  • Grooves help relieve firing pressure and reduce copper fouling
  • Packaged 20 bullets per box

Best Used For

  • Hunters loading 450 Bushmaster rifles for lead-free big-game hunting
  • Shooters wanting a 275-grain TSX flat-base bullet for controlled penetration
  • Reloaders seeking a copper bullet with pressure-relief grooves and reduced fouling
  • Hunters prioritizing deep penetration through dense tissue and heavy bone

Specifications

Accuracy ClaimYes
Bullet Caliber45 Caliber (0.451'''')
Bullet Diameter0.451'''')
Bullet TypeTSX Flat Base
Bullet Weight275gr
Cartridge450 Bushmaster
Construction100% Copper
Copper Fouling ReductionYes
Country Of OriginBarnes Bullets
DesignTriple Shock X
GroovesYes
Lead FreeYes
PenetrationExtreme
Pressure Relief GroovesYes
Quantity20/Box
Weight Retention100%

Pros

  • Lead-free, 100% copper construction
  • Triple-Shock design with precision-cut rings
  • Grooves help relieve firing pressure
  • Designed to reduce copper fouling
  • 20 bullets per box for hunting use

Considerations & Trade-offs

  • This is a premium hunting bullet, so it may come at a higher cost than standard options.
  • The 275gr TSX Flat Base design is specific to 450 Bushmaster / .451 caliber use, so compatibility should be checked carefully before loading.
  • The lead-free, all-copper construction may be preferred for some hunting applications, but it is a different material choice than traditional lead-core bullets.
  • The product description emphasizes accuracy and penetration, but actual results will still depend on rifle setup, load development, and hunting conditions.

Suggested Comparisons

  • Other .450 Bushmaster bullets
  • Lead-free hunting bullets
  • Copper hunting bullets
  • Big-game rifle bullets

Suggested Accessories

  • Ammunition storage box
  • Bullet puller
  • Reloading press
  • Reloading dies

Frequently Asked Questions

What caliber and bullet weight is this Barnes Triple Shock X load intended for?

The product title identifies it as a .45 caliber (.451") 275-grain TSX Flat Base bullet for 450 Bushmaster.

Is this bullet lead-free?

Yes. The source description states that it is a lead-free, 100% copper-constructed bullet.

How many bullets come in a box?

The product title lists 20 bullets per box.

What is the Triple-Shock design supposed to do?

According to the description, the TSX design uses precisely positioned rings cut into the bullet body to relieve firing pressure and reduce copper fouling.

Does the source say anything about hunting performance?

The description says it is designed for extreme penetration and claims it typically retains 100% of its original weight after passing through dense tissue and heavy bone. Those are the only performance statements provided.