X2 ... I'm no EXPERT by any means, just a few years shooting CB's.... this is what has worked for me. I would sight in with your hunting heads. I shoot the Vortex with the Varizone scope. On some BH's I notice that when sighted in at 20 then one of the other aimpoints may be off a little. After sighting in at 20yrds I made some adjustments on the speed ring setting (varizone). I haven't chrono'd my CB and don't know my exact speed but I think it's pretty close. I basically set the ring to to fine tune my remaining aimpoints and didn't go by any specific number or setting. I just moved it until my POI for the other aimpoints was set up how I liked it. I'm not totally sure if that's exactly how the manual said to do it or not. But I believe it said to set the speedring AFTER sighting in at 20yrds. Then it's supposed align your remaining aimpoints properly. But like I was saying. Depending on your arrows, heads, string etc. You may not get all the aimpoints to hit spot on for every range. You'll just have to experiment a little. It took me a little while getting mine just how I wanted it but now it's dialed in great. Hope this helps...