Federal HammerDown Henry Birthday Boy .45-70 Govt 300gr HP 20-Round 4570HENRY

The Federal Premium Henry Birthday Boy Edition is a .45-70 Govt round built to do more than just look good on a shelf. While traditional big-bore ammo can sometimes hang up in tubular magazines or suffer from bullet deformation, this load is precision-tuned for lever-action rifles. It smooths out the feeding process, ensuring that every time you work the lever, the round glides into the chamber without hesitation or drag.

This cartridge is all about mechanical harmony. Federal matched the length, pressure, and bullet shape specifically to the timing of a lever-action’s cycle. The 300-grain jacketed hollow point isn't just heavy—it’s balanced to stay stable in flight while expanding predictably on impact. By pairing uniform brass with consistent primers, Federal created a system that delivers the same reliable "thump" every time you pull the trigger. This limited-edition release serves as a tribute to America’s 250th anniversary, offering collectors a piece of history that performs with modern ballistic excellence.

The true strength behind this load is its versatility in the field. Unlike standard flat-point rounds that can lack aerodynamic consistency, this jacketed hollow point is engineered with a specific profile to maintain a stable trajectory out to 200 yards. The reloadable brass and non-corrosive Boxer primers provide long-term value for high-volume shooters, while the tuned geometry ensures your rifle feeds flawlessly even during rapid cycling. Whether you are hunting elk in heavy timber or ringing steel at the range, this 250th-anniversary load represents the perfect blend of commemorative style and heavy-duty field performance. 

Key Features

• Jacketed Hollow Point Projectile: Features an engineered cavity and jacket thickness for controlled expansion and efficient energy transfer on game.
• Lever-Action Optimized Geometry: Consistent overall length and profile ensure reliable feeding and reduced cycling interruptions.
• 300-Grain Bullet at 1,850 FPS: Provides a balanced mass-to-velocity ratio for a stable trajectory and effective terminal penetration.
• Brass Case with Boxer Primer: Uniform metallurgy and a reliable ignition system provide consistent firing performance and reload capability.

Technical Specification

• Manufacturer: Federal Premium
• Product Line: Henry Birthday Boy Edition
• Caliber: .45-70 Government
• Bullet Weight: 300 Grain
• Bullet Type: Jacketed Hollow Point (JHP)
• Muzzle Velocity: 1,850 FPS
• Muzzle Energy: 2,280 ft-lbs
• Case Material: Brass
• Cartridge Type: Centerfire Rifle
• Primer Type: Boxer
• Quantity: 20 Rounds
• Proudly made in the USA

Secure consistent lever-action performance with a cartridge engineered for both mechanical reliability and terminal effectiveness. Federal Premium and Henry Repeating Arms have set a high bar for commemorative ammunition, ensuring that this .45-70 Govt load honors the spirit of American independence with every shot fired. Trust SMKW to deliver proven ammunition solutions backed by industry expertise and a commitment to quality sourcing. Always ensure your firearm is chambered for .45-70 Govt and follow all standard safety regulations for a safe and successful shoot.