Barnes Originals bullets for .45/70 (.458) use pressure-formed pure copper tubing around a pure lead core, a production method the company introduced in 1939. Designed for reloaders, these 400 grain FNSP projectiles are documented to expand reliably and retain a high percentage of their original weight. On impact, Barnes Originals typically expand to more than 200 percent of their original diameter and retain approximately 70 to 90 percent of their original weight.
Key Specifications
- Manufacturer is Barnes.
- Product line is Barnes Originals.
- Caliber is .45/70 (.458).
- Bullet weight is 400 grains.
- Configuration is FNSP.
- Quantity per package is 50 count.
- Introduced in 1939.
- Typical expansion exceeds 200 percent of original diameter.
- Typical weight retention is 70 to 90 percent.
- Listed shipping weight value is 3.04 (as provided in source data).
These Barnes Originals offer reloaders a time-tested option for .45/70 ammunition building where consistent expansion and retained mass matter. Their pressure-formed construction and long production history make them a practical choice for handloaders seeking documented, repeatable performance in large-bore cartridges.
