Originally Posted by ar15barrels
The major disadvantage of first focal plane scopes is that the crosshairs often become very thick at higher powers.
The thick crosshair can obscure small targets, which makes it harder to be precise on very small targets.
It should be understood that we are talking VERY small targets here. As in less than .1 mil size. A correctly executed FFP reticle does not suffer this problem at all. And the above is not always true. I've used SFP scopes with thicker reticles than FFP scopes. Conversely, it should be noted that some SFP reticle **cough**Nightforce have reticles thin enough for incredibly precise quartering, but can easily get lost while hunting or viewing targets with busy backgrounds.
Moral of the story...choose wisely.