Description
The Barnes Pioneer line takes the proven performance of the Barnes Original bullet and optimizes it specifically for your lever action rifle or revolver. Every round is carefully loaded to work flawlessly with tubular magazine feed systems and single-feed chambers, which means you get smooth, reliable cycling from shot to shot without worrying about bullet design causing feeding problems.
At the heart of these rounds is the 400-grain Barnes Original soft point bullet, a design that goes back to 1939 when it was the first custom hunting bullet available to American handloaders. The bullet starts with pure copper tubing pressure-formed around a pure lead core, creating a thick jacket that provides controlled expansion paired with impressive weight retention. When the bullet strikes game, it typically expands to more than 200 percent of its original diameter while retaining 70 to 90 percent of its weight. That combination of expansion and integrity means deep penetration where it matters most.
Barnes Pioneer Performance from Your 45-70
Loaded to 1,715 fps muzzle velocity with 2,613 ft-lbs of energy, these rounds carry serious downrange power. The 400-grain weight and .246 ballistic coefficient keep the round fairly stable in flight, making it manageable for hunting shots out to reasonable distances. The flat-nose design inherent to tubular magazine ammunition prevents accidental detonation while cycling through the magazine, a real safety consideration with a cartridge this potent. These rounds work equally well in classic Marlins, Henrys, Winchesters, or modern reproductions, plus compatible revolver platforms.
What Makes This Ammo Right for Lever Guns
Barnes designed the Pioneer line specifically around how lever guns feed ammunition. The flat nose profile, reliable priming, and consistent loading mean you can cycle from magazine to chamber without the feeding hiccups that sometimes plague poorly designed big-bore ammo. New production, non-corrosive, and loaded into reloadable brass with boxer primers, so once you run through these rounds, you can reload them again if you handload. That reusable brass adds real value to each box.
Key Specifications
- Caliber: .45-70 Government
- Bullet Weight: 400 Grains
- Bullet Type: Barnes Original Soft Point
- Rounds per Box: 20
- Muzzle Velocity: 1,715 fps
- Muzzle Energy: 2,613 ft-lbs
- Ballistic Coefficient: .246
- Sectional Density: .272
- Case Type: Reloadable Brass
- Primer Type: Boxer Primer (Non-Corrosive)
- Manufacturer: Barnes Bullets
- Model: Pioneer
- MPN: 32138
- UPC: 716876457052
What’s Included
- 20 rounds of Barnes Pioneer 45-70 Government ammunition
- 400-grain Barnes Original soft point bullets
- Reloadable brass casings
Frequently Asked Questions
Will Barnes Pioneer 45-70 ammo feed reliably in my tubular magazine lever action rifle?
Yes. These rounds are specifically engineered for tubular magazine feeding. The flat-nose design prevents primer detonation issues common with some rifle ammunition, and the consistent loading specifications ensure smooth cycling from magazine to chamber without feeding hiccups. This design makes it ideal for both classic lever guns and modern reproductions.
What kind of expansion can I expect from the 400-grain Barnes Original bullet?
The Barnes Original is built to expand to roughly 200 percent of its original diameter while retaining 70 to 90 percent of its weight. This balanced expansion pattern creates a wide wound channel while maintaining deep penetration, which makes it effective on heavier game. The thick copper jacket and lead core design are proven across generations of hunting use.
Can I reload the brass from these Barnes Pioneer rounds?
Absolutely. These rounds come loaded into reloadable brass with boxer primers, so once you shoot them, you can process and reload the casings if you handload ammunition. This makes the actual cost per shot lower over time compared to some other factory options.
What game is this ammunition suitable for?
The 400-grain weight and 1,715 fps velocity make these rounds suitable for larger North American game like elk, moose, and bear with proper shot placement. The controlled expansion characteristics work well for hunting applications where both penetration and terminal performance matter. These rounds are less suited for lighter game where the bullet weight and energy can be excessive.






Reviews
There are no reviews yet.