I bought a Simmons Pro Diamond scope. It is new. Several descriptions state that it identifies a turkeys vitals at 40 yards but there is no explanation of how this works. I know it must have something to do with the vitals filling the diamond. This scope is a 1.5-5x32. It seems to me that as you change the magnification, the vitals would either appear to increase or decrease in size. I called customer service, which is Bushnell now, and they have know idea. Can someone that OWNS and USES this scope give me some clarification.