That's actually one of the pitfalls i see for red-dot type sights in general. Your effective sight radius changes from say 28" down to only 2" at best. The reflector makes up a little ground for variability, but I usually feel like I'm giving up a LOT for downrange precision.

On the upside, it's a shotgun, not a slugger, so having my POA "centered" in the pattern (net POI) is pretty forgiving, and an unexact science. It's dang nice, on the other hand, to be able to shoot more heads up style, with my eye on the running dog, rather than the sights. It aint perfect, but it's the best of both worlds for that application. A little mag and high viz "reticle", plus a full field view.