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Triple Shot X(R) 458 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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List Price: $28.99
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SKU: 749009072
Overview
Designed for hunters loading .458 caliber rifles, this 300-grain, lead-free copper bullet is built for controlled use on demanding game where deep penetration is a priority. Its Triple-Shock design uses precision-cut rings in the bullet body to help relieve firing pressure and reduce copper fouling, while also supporting higher-velocity loading. Packaged 20 per box, it suits hunters who want a premium bullet option for heavy-bone and dense-tissue applications without relying on lead.
Why Hunters Choose the Barnes Bullets
Lead-free, 100%
Copper construction
Triple-shock Design
Pressure-relief rings
Extreme Penetration
Described As
Retaining original weight after heavy
Can Be
Safely loaded to higher velocities
Key Features
- Lead-free, 100% copper-constructed hunting bullet
- 458 caliber, 300gr TSX Flat Base design
- Triple-Shock bullet with precisely positioned body rings
- Grooves are designed to relieve firing pressure
- Can be safely loaded to higher velocities
- Packaged 20 bullets per box
Best Used For
- Hunters loading .458 caliber rifles for deep-penetration big-game applications
- Users wanting a lead-free, 100% copper bullet for hunting setups
- Shooters seeking a 300gr TSX flat base option in a 20-count box
- Hunters prioritizing reduced copper fouling in compatible rifle loads
Specifications
| Accuracy Claim | One of the most accurate hunting bullets you can buy |
|---|---|
| Bullet Diameter | 0.458'''' |
| Bullet Type | TSX Flat Base |
| Bullet Weight | 300gr |
| Caliber | 458 Caliber (.458') |
| Copper Fouling Reduction | Yes |
| Design | Triple-Shock |
| Grooves | 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
- Triple-Shock design with pressure-relief rings
- Designed for extreme penetration
- Described as retaining original weight after heavy bone and dense tissue
- Can be safely loaded to higher velocities while reducing copper fouling
Considerations & Trade-offs
- This is a lead-free, all-copper bullet, so it may not suit hunters who prefer traditional lead-core projectiles or are loading for a specific lead-based setup.
- The 300gr weight and .458 caliber make it a specialized option, so it is best matched to rifles and game applications already set up for this cartridge class.
- The design is described as being able to be loaded to higher velocities, but actual results still depend on the rifle, load development, and safe reloading practices.
- Pack count is 20 per box, which may be limiting for high-volume load testing or extended practice sessions.
Suggested Comparisons
- Other .458 caliber rifle bullets
- Lead-free hunting bullets
- Copper hunting bullets
- Premium big-game bullet options
Suggested Accessories
- Ammunition storage box
- Reloading components
- Bullet puller
- Cleaning supplies
Frequently Asked Questions
What caliber and bullet weight is this Barnes TSX load?
It is listed as a .458 caliber bullet in 300 grain weight, packaged 20 bullets per box.
Is this bullet lead-free?
Yes. The product description states that it is lead-free and constructed from 100% copper.
What is the Triple-Shock (TSX) design intended to do?
According to the description, the TSX design uses precisely positioned rings cut into the bullet body. These grooves are described as relieving firing pressure and reducing copper fouling.
Does the product description say anything about weight retention?
Yes. The description says it typically retains 100% of its original weight even after passing through dense tissue and heavy bone.
What is included in the box?
The product is sold as a 20-count box of 300 grain .458 caliber TSX flat base bullets.