RE: Excalibur Lighted Reticle scopes????
I shoot two bows with LumiZones. Good value for the money. Can be used with or without lighted reticule. Have not had to use lighted reticule for end of day hunting. Figure if it's too dark to see clearly its too dark to track. (Besides, being retired, there is always tomorrow.) Great for low light days tho. Larger ocular bell lets in plenty of light for aiming purposes and has generous field of view.
How it works is that turning the speed ring increases or decreases the magnification of the scope. So on lower speed setting (power) the space between the multiple aiming points is larger thereby more closely matching the trajectory of a slower arrow. Obversely, at the speed ring setting for 350 fps the scope is on about 4.5 power and the distance between the aiming points is decreased. You will have to experiment with your bow in any case as the numbers are guidelines and not as accurate as the MOA clicks on a conventional scope.
Only knock I have is size. Wish they were a bit smaller, like 10".