I stumbled on a site that I thought was pretty neet and very infomative. This site should answer all our questions, or at least get us started in the right direction. The site is "BigGameinfo". When you get there hit on "ballistics calculator." Plug in the information that you have knowledge of on your bullet and the calculator will do the rest. The more you use the chart and play with the information that you are supplying, you can start to realize your bullet height at certain yardages and what you need to be sited in at to achieve your optimal "max point blank range." Of course ther is no substitue for range time.