I'm jumping into the deep end of Field Target in a couple weeks. I have a full season of Hunter class under my belt and decided to go give WFTF a shot. I'm going to participate at the Sonoran Grand Prix in a couple weeks and was going to use my Hawke Airmax but felt the ranging isn't accurate enough. I got a new scope to try. SO, my question is, are most using the high magnification to range and then turning the magnification down to shoot? Any other helpful tips on high power scope usage?