What does the term "let off" refer to in the context of a compound bow?

In the context of a compound bow, "let off" specifically refers to the reduction in draw weight at full draw. When a compound bow is drawn, its cam system allows the archer to pull back the string with a certain amount of effort that increases as the bow is drawn. However, once the bow reaches full draw, the cam design causes a significant decrease in the amount of force needed to hold the bowstring back. This phenomenon makes it easier for the archer to maintain their aim and focus on positioning and alignment before releasing the arrow. Higher let off percentages can make the shooting experience more comfortable and are particularly beneficial for longer shooting sessions as they reduce fatigue in the shooter's arms and shoulders.

Other aspects related to archery, such as the release of the arrow, adjustment of the sight picture, or changing the draw length, do not accurately define “let off” and focus on different technical operations or adjustments within archery. Understanding the term "let off" is fundamental for archers, especially when it comes to selecting a bow suited to their personal comfort and shooting style.