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Triple Shot X(R) 45 Caliber (.458'''') Rifle Bullets - 458 Caliber (0.458'''') 300gr Tsx Flat Base 20/Box
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 749009033
Overview
Built for hunters who want a lead-free option in a heavy .458-caliber load, this 300-grain TSX flat base bullet is intended for demanding big-game applications where deep penetration matters. Its 100% copper construction and Triple-Shock design are described as helping it hold together through dense tissue and heavy bone, while the ringed body is meant to reduce firing pressure and copper fouling. Barnes positions it as a premium hunting bullet suited to rifles chambered for 45 caliber (.458") use, especially when a controlled, hard-hitting projectile is preferred. The 20-count box is a practical choice for hunters loading a limited number of serious field rounds.
Why Hunters Choose the Barnes Bullets
Lead-free, 100%
Copper construction for hunters seeking
Triple-shock Design
Uses precision rings to help
Grooves Are
Designed to reduce copper fouling
Can Be
Safely loaded to higher velocities
Packaged As
20 bullets per box for
Key Features
- Lead-free, 100% copper-constructed bullet
- Triple-Shock design with precisely positioned rings
- Grooves help relieve firing pressure
- Designed for higher-velocity loading
- Helps reduce copper fouling
- 300-grain TSX Flat Base, 20 bullets per box
Best Used For
- Hunters loading .458 caliber rifles for controlled, lead-free big-game hunting applications
- Shooters wanting a 300gr bullet for deep penetration through dense tissue and heavy bone
- Reloaders seeking a copper bullet design with grooves that reduce firing pressure
- Hunters prioritizing a premium hunting bullet sold in a 20-count box
- Users who value accuracy-focused hunting bullets from Barnes Bullets
Specifications
| Accuracy Claim | One of the most accurate hunting bullets you can buy |
|---|---|
| Bullet Caliber | 458 Caliber (0.458'''') |
| Bullet Type | Tsx Flat Base |
| Bullet Weight | 300gr |
| Caliber | 45 Caliber (.458'''') |
| Copper Fouling Reduction | Yes |
| Design | Triple-Shock |
| Groovesrings | Series of precisely positioned rings cut into the bullet's body |
| Lead Free | Yes |
| Material | 100% copper |
| Penetration | Extreme penetration |
| Pressure Relief | Yes |
| Quantity | 20/Box |
| Weight Retention | 100% of original weight |
Pros
- Lead-free, 100% copper construction for hunters seeking non-lead ammunition
- Triple-Shock design uses precision rings to help relieve firing pressure
- Grooves are designed to reduce copper fouling during use
- Can be safely loaded to higher velocities according to the product description
- Packaged as 20 bullets per box for convenient reloading supply
Considerations & Trade-offs
- Lead-free, all-copper construction may be a deliberate choice for hunters who want to avoid traditional lead bullets, but it also means this is a specialized projectile rather than a general-purpose option.
- The 300gr weight and .458 caliber make this a heavy, large-bore bullet, so it is best matched to rifles and loads built around that specification.
- The Triple-Shock design is intended to reduce firing pressure and copper fouling, but actual load development still matters; it is not a substitute for proper testing in your rifle.
- Pack size is 20 bullets per box, which is practical for load work and hunting use, but not a high-volume range option.
Suggested Comparisons
- Lead-free hunting bullets
- Copper rifle bullets
- .458 caliber rifle bullets
- Premium big-game bullets
Suggested Accessories
- Ammunition storage box
- Reloading press
- Bullet puller
- Caliber-specific reloading dies
Frequently Asked Questions
What is this bullet made of?
The source describes it as a lead-free, 100% copper-constructed bullet.
What caliber and weight is this load?
It is listed as a 458 caliber (.458) 300gr TSX Flat Base bullet.
How many bullets come in a box?
The product title lists 20 bullets per box.
What is the Triple-Shock TSX design intended to do?
The description says the bullet has precisely positioned rings cut into the body. These grooves are described as relieving firing pressure, allowing the TSX to be safely loaded to higher velocities while reducing copper fouling.
Does the product description say what game this bullet is best for?
No. The provided source does not specify game type or hunting application beyond describing it as a premium hunting bullet.