243 WSSM Case Dimensions: A Comprehensive Guide
The 243 WSSM (Winchester Super Short Magnum) is a popular cartridge among rifle enthusiasts, known for its impressive performance and versatility. When it comes to reloading or working with 243 WSSM cases, understanding the case dimensions is crucial. In this article, we'll delve into the specifics of 243 WSSM case dimensions, providing you with the information you need to ensure accurate and reliable reloads.
Case Specifications
Case Length
The case length of a 243 WSSM is 1.670 inches (42.5 mm). This relatively short case length allows for efficient powder burning and reduced recoil.
Case Head Diameter
The case head diameter of a 243 WSSM is 0.535 inches (13.6 mm). This dimension is critical, as it ensures proper headspacing and alignment in the rifle's chamber.
Rim Diameter
The rim diameter of a 243 WSSM is 0.473 inches (12.0 mm). This dimension is important for proper extraction and ejection of the spent case.
Case Capacity
The case capacity of a 243 WSSM is approximately 45.6 gr H2O. This capacity allows for a wide range of powder loads and bullet combinations.
Neck Diameter
The neck diameter of a 243 WSSM is 0.276 inches (7.0 mm). This dimension is critical for ensuring proper bullet seating and alignment.
Shoulder Angle
The shoulder angle of a 243 WSSM is 30 degrees. This angle helps to ensure proper case expansion and alignment in the rifle's chamber.
Tolerances and Variations
It's essential to note that case dimensions can vary slightly between manufacturers and lots. While the dimensions listed above are considered standard, you may encounter minor variations. Always check your specific cases against these dimensions to ensure compatibility and accuracy.
Conclusion
Understanding the case dimensions of the 243 WSSM is crucial for reloaders and rifle enthusiasts. By knowing these critical dimensions, you can ensure accurate and reliable reloads, optimize performance, and maintain the longevity of your rifle. Remember to always check your specific cases against these dimensions and follow proper reloading procedures to ensure the best results.
