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Barnes Pioneer ammunition brings serious performance to your lever gun platform. Loaded with a 300-grain Triple Shock X flat-nose bullet, this round is built from the ground up for the demands of modern hunting with classic rifles. The TSX bullet is pure copper construction without lead, and it's engineered to retain nearly 100% of its weight through impact. That weight retention translates to deeper penetration and more predictable terminal performance on game.
Most 45-70 ammunition uses flat or round-nose bullets because of safety requirements in tubular magazines. That's not a limitation here, it's by design. The flat-nose TSX profile feeds flawlessly through the magazine and chambers without the feeding hiccups you sometimes see with other hunting loads. Rounds cycle cleanly from the magazine to the chamber, which matters when you need a fast second shot. The ammunition is loaded to 1,925 feet per second, giving you solid energy out to hunting distances.
When the TSX impacts, the nose cavity collapses inward and the bullet peels back into four razor-sharp copper petals. This creates a large-diameter wound channel without fragmenting like softer bullets do. The all-copper build means nothing separates or breaks off inside the animal, so penetration stays consistent. Circumferential grooves cut into the shank reduce fouling and pressure, allowing Barnes to load these to higher velocities safely.
Factory fresh ammunition comes in reloadable boxer-primed brass cases and is non-corrosive. Whether you're running a Winchester, Marlin, Henry, or modern lever gun, this load was designed with your rifle in mind.
The flat-nose design is a safety requirement for tubular magazine firearms because bullets are stacked nose-to-primer in the tube. A pointed tip could contact the primer of the round in front of it during recoil, creating a dangerous pressure spike. The TSX flat-nose feeds reliably while delivering the expansion and penetration you need for hunting.
Yes, this ammunition is engineered specifically for lever guns and revolvers chambered in 45-70 Government. It cycles from tubular magazines and feeds through the action without the hiccups sometimes seen with other loads. As always, verify your rifle's chamber specifications and pressure ratings if you're unsure.
The all-copper TSX bullet holds together through impact instead of fragmenting or losing pieces. This means the bullet delivers its full energy over a longer distance inside the animal, creating deeper penetration and more reliable terminal performance. Compare that to softer bullets that shed weight and lose penetration faster.
Yes. The ammunition comes in reloadable brass cases with boxer primers, so you can reload them after firing. The cases are new production quality and will last several reload cycles with proper care.
| Caliber/Gauge | .45-70 Government |
|---|---|
| Cost per Round | 2.75 |
| Grains | 300 gr |
| Length | 6.4500 |
| Manufacturer | |
| Manufacturer Part Number | 32139 |
| Model | |
| Product Type | Triple Shock X |
| Units per Box | 20 |
| UPC | 716876457069 |
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