Rimfire ammunition is primarily limited to which type of pressure?

Rimfire ammunition is primarily associated with low pressures due to its design and the materials used in its construction. The primer is located in the rim of the cartridge case, and it ignites when struck by the firing pin, leading to lower overall pressures during firing compared to centerfire ammunition.

This design limits the structural integrity needed to contain internal pressures, allowing it to be made with thinner walls. Typical examples of rimfire cartridges, such as the .22 Long Rifle, operate at relatively low velocities and pressures, making them suitable for applications like target shooting and small game hunting.

Understanding the pressure characteristics of rimfire ammunition is essential for proper handling and usage, as it highlights the importance of using the correct type of ammunition for specific firearms. This knowledge helps shooters recognize the limitations and safe operating conditions for their guns.