This is what the viewer sees when looking through the scope. Various scopes employ different reticles.
Post and Dot
Fixed: Has a single magnification eg 4x power.
Variable: Magnification can be increased/decreased by rotating the power ring. eg 3x9 power
These are the mechanisms to adjust the crosshairs to “zero” : One for vertical and one for horizontal
Lockable-only adjustable when cap is unscrewed
Adjustable- Can move crosshairs by simply turning turret without unlocking
WHEN BUYING A SCOPE
Select a powerful scope( as high as 20x or more). Very Fine crosshairs cover less of the target than heavier alternatives. An adjustable objective is preferred.
The longer the anticipated shot , the more powerful the scope.Since the distance is not always known, many hunters opt for a variable magnification scope, such as 3 x 9. Hunters avoid fine crosshairs as they are difficult to see with in low light conditions. A popular choice is the Duples which has heavier crosshairs to locate game but reduces to a finer point at the center for precision. An adjustable objective is necessary for longer shots. The larger the objective lens the more light enters the scope. This is the reason hunters choose 40mm or 50mm lenses.
It's important to consider what caliber is being used. For more tips make sure to check out our exhaustive guide to scopes HERE.