45-70 350 Grain FP Trapdoor

 

The .45-70 350 Grain FP Trapdoor is a powerful and historic cartridge designed for use in the .45-70 Government caliber rifles, particularly the Trapdoor Springfield rifle. This cartridge, often associated with military and hunting applications, represents a significant part of American firearm history, especially during the late 19th century.

Historical Background

The .45-70 Government was introduced in 1873 by the U.S. Army as the standard-issue cartridge for the Springfield Trapdoor rifle, which was the service rifle of the U.S. military from the 1860s through the 1890s. The “Trapdoor” refers to the unique breech-loading action of the Springfield rifle, which featured a hinged block that opened to allow loading and unloading.

The .45-70 designation comes from the bullet’s caliber (.45 inches) and the powder charge (70 grains of black powder). Initially, the .45-70 cartridge was loaded with a 500-grain lead bullet, but various loadings have been developed over the years, with the 350-grain flat point (FP) bullet being one of the popular choices for modern reloaders and enthusiasts.

Cartridge Specifications

The .45-70 350 Grain FP Trapdoor round typically features:

• Bullet weight: 350 grains
• Bullet type: Flat Point (FP) Lead Projectile
• Cartridge case: Brass
• Overall length: About 2.55 inches
• Muzzle velocity: Approximately 1,350 feet per second (fps)
• Muzzle energy: Around 1,700 foot-pounds of energy (depending on powder charge and rifle type)

The 350-grain FP bullet is designed to provide a balance of accuracy and terminal performance. The flat point bullet design allows for better penetration and energy transfer, making it suitable for hunting medium-sized game and for target shooting. This bullet weight is also favored for its relatively lower recoil compared to heavier projectiles like the 500-grain, which can be harder to handle for some shooters.

Performance and Uses

The .45-70 350 Grain FP Trapdoor is known for its versatility and effectiveness, especially when used in Trapdoor Springfield rifles or modern rifles chambered for the .45-70 Government. Its low recoil, when compared to some heavier loads, makes it ideal for shooters who want the historical experience of shooting the Trapdoor Springfield while maintaining manageable recoil.

This load is also effective for hunting, especially in North America, where it can be used for medium-sized game such as deer, black bear, and wild hogs. The 350-grain FP bullet offers excellent accuracy at medium to long ranges, especially when fired from rifles with longer barrels, such as the Trapdoor Springfield.

Reloading and Modern Variants

For modern reloaders, the .45-70 350 Grain FP Trapdoor load is relatively easy to assemble. Reloading data for the .45-70 cartridge can vary based on powder types, bullet weight, and the rifle in use. Reloaders should be cautious, as older Trapdoor Springfield rifles have lower pressure limits compared to modern .45-70 rifles. The 350-grain bullet is a good choice for these vintage rifles, as it generates pressures within the safe operating range of the Trapdoor Springfield’s action.

Conclusion

The .45-70 350 Grain FP Trapdoor is a historic, reliable, and versatile cartridge that has stood the test of time. It combines the classic design of the Trapdoor Springfield with modern reloading options, making it a great choice for those who enjoy shooting vintage military rifles or hunting with a traditional round. Whether you’re a history enthusiast, a reloader, or a hunter, this cartridge offers both performance and nostalgia in a single package.

45-70 350 Grain FP TRAPDOOR
Packaged 20 or 100 rounds
Formulated for a reduced recoil modern lever action rifle and a standard older model trap door rifle.
Velocity 1350 FPS