If your average is only 50 Yards then a red dot is the way to go. It will look just like a 2x as far as magnification. For some reason a 2x doesn't look like it magnifies the target at all. A red dot is much easier to pick up. If you plan on shooting out to 100 yards then skip the 2x and go with a 4x as it will be as easy to hold as a 2x and give you much better magnification of your target. Also as stated above you must practice with your gun/scope to become proficient with it.
