What indicates proper eye relief for a rifle scope?

Proper eye relief for a rifle scope is indicated by viewing the full field of view comfortably. Eye relief refers to the distance from the ocular lens of the scope to the shooter’s eye where they can see a full, clear picture through the scope without any obstruction, such as the scope’s housing or the shadow of the lens.

When the eye relief is set correctly, the shooter is positioned at an optimal distance, allowing for a complete sight picture that ensures they can quickly acquire their target and maintain situational awareness. If the eye relief is inadequate, it can lead to issues such as "scope bite," where the rifle scope comes too close to the eye, posing a risk of injury, or the inability to acquire the full field of view, which hinders effective aiming.

In summary, proper eye relief allows the shooter to see the entire field of view without discomfort and significantly contributes to accuracy and safety while shooting.