What Semisane and Gm54-120 said.

Been there, done that. Bought two red dot sights from Cabela's a few years ago: They cost about $200 apiece. Those red dot scopes were marginally OK for short range shots in the daytime. When sunset approached they were useless.

The dot grew a tail in low light. Even on the lowest brightness setting, those scopes were bad. The dot was too bright and that caused a lot of distortion. One evening while hog hunting, a doe came in to the waterhole at about 40 yards. Sighted on the animal for drill: If deer season had been in i would not have taken that shot.