What is the general measured range of cylinder gap in a double action revolver?

The generally accepted measured range for the cylinder gap in a double action revolver falls between .003 and .013 inches. This range is important for ensuring proper function and safety of the firearm. A cylinder gap that is too narrow can lead to increased pressure buildup and potentially harmful gas leaks, which may affect performance and safety. Conversely, a gap that is too wide can result in poor accuracy and excessive fouling in the revolver’s action. The optimal range allows for proper clearance while maintaining efficiency in the revolver's operation.

Understanding this specific measurement is crucial for gunsmiths and enthusiasts alike when inspecting and maintaining revolvers to ensure they operate smoothly and safely.