The .300 Jarrett cartridge, developed by gunmaker Kenny Jarrett, is known for its high-velocity performance and accuracy. It is based on the .300 Weatherby Magnum but generally uses bullets seated further out to maximize case capacity. This configuration allows the .300 Jarrett to achieve higher velocities, making it an excellent choice for long-range hunting and competitive shooting. Rifles chambered for this cartridge are typically custom-built for precision.
The .300 Jarrett is suitable for hunting large game such as elk, moose, and large deer, providing substantial stopping power and effective range. Its high velocity and flat trajectory also make it useful for long-distance shooting sports, often preferred by marksmen looking for high precision.
Safety and quality control are critical considerations, as the cartridge's performance relies heavily on expert craftsmanship and proper handloading techniques.