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If you're running a .357 Magnum lever gun or revolver, you need ammo that actually works in these guns. That's exactly what Barnes Pioneer 140-grain ammunition delivers. These rounds are purpose-built with a flat nose design that feeds smoothly through tubular magazines without snagging, and the all-copper XPB bullet gives you real hunting performance at both handgun and rifle velocities.
The core of this load is Barnes' proven all-copper XPB bullet technology. Unlike jacketed ammunition that can separate under impact, all-copper bullets maintain virtually 100 percent weight retention while delivering massive expansion. The bullet peels back into sharp-edged petals on impact, creating a larger wound channel and more effective energy transfer. For hunters working with traditional lever actions and revolvers, this means you get reliable, repeatable terminal performance you can count on.
The flat-nose design isn't just for looks. Lever-action rifles rely on tubular magazines where rounds stack nose-to-primer. A round-nose or hollow-point design risks setting off the primer of the round in front of it during feeding or recoil. Barnes engineered these with a safe, practical flat nose that feeds smoothly and consistently through your rifle's magazine, chamber, and out the other side without fuss. Velocity runs around 1265 fps from a revolver and significantly higher from a rifle barrel, giving you solid terminal performance in either platform.
Barnes loads each round to deliver consistent performance whether you're shooting from a short revolver barrel or through an 16-18 inch carbine. The ammunition is new production, boxer-primed, and uses reloadable brass cases. This works for range time, hunting, or regular practice, and you can reload these cases once you're done with them.
Yes, Barnes Pioneer ammunition is specifically designed to perform in both platforms. The 140-grain load generates around 1265 fps from a revolver and significantly higher velocity from a lever-action rifle barrel. The all-copper XPB bullet maintains weight retention and expansion across both velocity ranges, making it a genuine dual-purpose load.
Lever-action rifles use tubular magazines where rounds stack nose-to-primer. A traditional hollow point or round nose could accidentally strike the primer of the round in front during feeding or recoil. The flat nose design feeds safely and smoothly through the magazine without risk, while still providing excellent expansion when it reaches the target.
All-copper bullets don't have a lead core and jacket that can separate on impact. The Barnes XPB expands reliably into razor-sharp petals while retaining nearly all of its weight, giving you deeper penetration and more consistent terminal performance. This matters more when shooting rifles where higher velocities and tougher game require maximum integrity.
Yes. These are new production rounds with boxer primers and brass cases designed for reloading. Once you fire them, you can reload the cases if you have the equipment and components to do so.
| Caliber/Gauge | .357 Magnum |
|---|---|
| Cost per Round | 1.75 |
| Grains | 140 gr |
| Manufacturer | |
| Manufacturer Part Number | 32141 |
| Model | |
| Product Type | Triple Shock X |
| Units per Box | 20 |
| UPC | 716876143580 |
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