I've shot a single red dot scope on my .44 mag T/C Contender for years and really like it, consistently taking deer out to 100 yards. I tried a three-dotscope on my Parker Buck Buster, but the scope was too "busy", covering up too much of the target and I didn't like the multiple lines of the regular scopes. I settled on the single red dot since I was used to it and sighted it in for 20 yards. Off of a sandbag rest,a 425 grain arrow hits 2" low at 30 yards and 10" low at 40 yardsusing 125 grain points. I've used a range finder to mark 30 yards at various points in a circle around my deer stands so that I know where to hold. I took a nice doe a couple of weeks ago at 35 yards thanks to doing this. I'm considering sightingmy crossbow in for 30 yardsso that I will know where to hold for 50 yards, but have not yet convinced myself that I have enough experience to be confident at that range.Tom