Quick Answer
For the .375 H&H, the best handloads for optimal performance typically involve a 300-340 grain bullet, with a load consisting of 90-100 grains of a fast burning rifle powder like H4831 or RL19, and a primer that provides consistent ignition.
Choosing the Right Bullet
The .375 H&H is a versatile cartridge capable of taking down large and dangerous game, but it requires the right bullet to achieve optimal performance. When selecting a bullet, look for one with a high ballistic coefficient and a weight of between 300-340 grains. This weight range allows for a good balance between penetration and expansion, making it suitable for hunting a variety of big game. Some popular options include the 300 grain Remington Core-Lokt and the 340 grain Barnes TSX.
Optimizing the Load
To achieve optimal performance from the .375 H&H, it’s essential to get the load right. A good starting point is to use a fast burning rifle powder like H4831 or RL19, which will produce a flat trajectory and good penetration. For a 300 grain bullet, start with 90-95 grains of powder, while a 340 grain bullet will require 100-105 grains. Experiment with these loads to find the sweet spot for your rifle and shooting style. It’s also crucial to use a primer that provides consistent ignition, as this will affect the accuracy and reliability of the load.
Powder Selection and Combustion
When selecting a powder for the .375 H&H, consider the burn rate and energy delivery. Fast burning powders like H4831 and RL19 are well-suited for this cartridge, and will produce a high muzzle velocity and flat trajectory. Look for powders with a burn rate of between 30-40% for optimal results. When loading, ensure that the powder is properly seated and the case is properly seated in the chamber to avoid any issues with ignition or pressure.
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