.20 BR at 59,000 psi - Standard Loads (Ramshot Data Edition 4.5 - 2011)

.20 BR: Standard-Pressure Performance with Ramshot Data

The .20 BR is a wildcat cartridge built for shooters who value precision, efficiency, and versatility. Developed by necking down the .22 BR case to .20 caliber, the .20 BR combines the benchrest pedigree of its parent case with the ballistic advantages of smaller-caliber bullets. At a standard operating pressure of 59,000 psi, this cartridge delivers excellent performance while maintaining brass life and reducing barrel wear, making it a practical choice for high-volume shooters and those who prioritize longevity alongside performance.

One of the defining characteristics of the .20 BR is its balance of speed and accuracy. Capable of propelling lightweight .20 caliber bullets beyond 4,000 feet per second, it offers an extremely flat trajectory and minimal wind drift, both critical for long-range varmint hunting and precision shooting. This makes the .20 BR a versatile choice, excelling in both competitive and field applications where shot placement and consistency are paramount.

The use of Ramshot powders, as documented in this data set, enhances the cartridge’s performance by providing clean-burning, consistent propellants well-suited to the .20 BR’s case capacity and bore size. These powders contribute to stable velocities and reliable ignition, giving handloaders the tools needed to fine-tune their ammunition for specific rifles and shooting conditions. This flexibility has made the .20 BR a favorite among handloaders who enjoy optimizing every aspect of their loads.

Handloading remains essential for this cartridge, as no commercial ammunition exists. Reloaders typically form cases from .22 BR brass using specialized resizing dies, taking care to ensure proper neck dimensions and uniform case preparation. Bullet seating depth, powder selection, and charge weight all play a critical role in extracting the .20 BR’s full potential. When paired with high-quality barrels and careful load development, the cartridge consistently delivers sub-MOA accuracy.

At 59,000 psi, the .20 BR represents an ideal compromise between velocity and component life. It maintains much of the performance of higher-pressure variants without the additional stress on brass or barrels, offering a cost-effective option for shooters who want precision without sacrificing durability. This makes it an attractive choice for those who shoot frequently and demand consistent, repeatable results over the long term.