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The Barnes TSX in .458 caliber is a 500-grain flat-base projectile machined entirely from copper, with zero lead in the mix. That solid construction is the whole reason reloaders reach for it when they're building loads for dangerous game and big bruisers. On impact the nose peels back into four sharp petals, and because there's no lead core to shed, the bullet drives through heavy bone and muscle while hanging onto close to all of its original weight.
Run your finger along the shank and you'll feel the grooves cut into it. Barnes calls this Accu-Groove technology, and those rings give displaced copper somewhere to go as the bullet travels down the bore. The payoff is less copper fouling building up in your barrel, lower pressure on stout loads, and the kind of consistency that shows up on paper. The TSX carries a sectional density of 0.341 and a G1 ballistic coefficient of 0.412, with an overall length of 1.663 inches.
Since this is a mono-metal bullet, seating depth matters more than it does with cupped lead-core designs. Barnes suggests starting around 0.050 inches off the lands, then working your way in. Most rifles settle into their best groups somewhere in the 0.030 to 0.070 inch range, so it pays to test a few. This 500-grain flat base is a natural fit for cartridges like the .458 Winchester Magnum, .458 Lott, and .45-70 class rounds where you want a heavy, deep-driving pill.
Introduced back in 2003, the TSX has grown into one of the most trusted hunting bullets Barnes makes, and the .458 500-grain version is the choice when the animal on the other end is large and unforgiving. Keep in mind these are component bullets for handloading, not loaded ammunition.
These are component bullets meant for handloading, not finished cartridges. You'll supply your own brass, powder, and primers to build your loads. They're a popular pick for reloaders working up heavy .458 big-game rounds.
Barnes recommends starting around 0.050 inches off the lands and adjusting from there. Most rifles shoot their tightest groups somewhere between 0.030 and 0.070 inches off the lands. Testing a few seating depths is worth the effort to find your rifle's sweet spot.
Those rings are Barnes' Accu-Groove technology, and they give displaced copper a place to go as the bullet moves down the bore. The result is less copper fouling in your barrel and reduced pressure on higher-velocity loads. It also helps the all-copper bullet shoot accurately.
The 500-grain weight and deep-penetrating copper build make them a strong choice for large, tough, and dangerous game. They work well in cartridges like the .458 Winchester Magnum, .458 Lott, and similar big-bore rounds. Because the bullet holds nearly all its weight, it drives through heavy bone and muscle reliably.
| UPC | 716876458219 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 30622 |
| Bullet Caliber | .458 Caliber |
| Caliber/Gauge | .458 Caliber |
| Grains | 500 |
| Quantity | 20 Per Box |
| Shipping Weight | 1.5375 |
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