The Federal F4570FS1 Fusion ammunition delivers maximum energy transfer and deep penetration for 45-70 Government rifles. This bonded soft point design eliminates jacket separation while maintaining controlled expansion across impact velocities. Hunters and shooters choose Fusion for reliable terminal performance on medium to large game.
What Makes This Different
Fusion technology molecularly bonds the lead core to the copper jacket, preventing separation that causes other bullets to fragment. The skived tip initiates expansion at impact while the bonded construction retains 95% of bullet weight. This combination produces larger wound channels compared to standard cup-and-core bullets that often lose 30-40% of their mass.
Key Features
- 300-grain bonded soft point bullet with molecularly fused jacket
- Skived tip design for consistent expansion at all impact velocities
- Retains 95% bullet weight for maximum penetration depth
- Clean-burning powder reduces fouling in lever-action rifles
- Boxer-primed brass cases suitable for reloading
- Optimized for 18-24 inch barrel lengths common in 45-70 rifles
- Factory-loaded to SAAMI specifications for consistent pressure
This ammunition performs effectively from 50 to 200 yards on deer, elk, and black bear. The bonded construction maintains trajectory consistency while delivering devastating terminal ballistics. Federal's quality control ensures shot-to-shot velocity consistency within 20 fps standard deviation. The 300-grain weight provides excellent sectional density for penetrating heavy bone and muscle.
Technical Specs
- Caliber: 45-70 Government
- Bullet Weight: 300 grains
- Bullet Type: Bonded Soft Point
- Muzzle Velocity: 1,850 fps (approximate)
- Muzzle Energy: 2,280 ft-lbs (approximate)
- Quantity: 20 rounds per box, 10 boxes per case
- Case Material: Boxer-primed brass
- Manufacturer: Federal Premium Ammunition
Federal Fusion represents proven bonded bullet technology at an accessible price point. This 45-70 Government load combines the stopping power traditional lever-gun hunters demand with modern bullet construction. Stock runs consistently due to Federal's manufacturing capacity and distribution network.