Range Target Using Mil-Dot First Focal Plane (FFP) Reticle
The FFP Reticle advantage is it keeps a constant relative size to the target at all zoom levels. If the target is 3 mil-dots tall at 4x zoom, it will still be 3 mil-dots tall at 10x zoom.
If you have a good estimate of the target size, you can estimate the target range by counting the target mil-dots. The spacing of the reticle mil-dots allows them to be counted to within 0.1 mil-dots.
The range formula is: Range (yds) = 27.8 x Target Height (inches) / reticle mil-dots.
For example: Deer are about 24″ from brisket to backbone so if it measures 1.5 mil-dots then it is 445 yards away. (27.8 x 24″ / 1.5 mil-dots = 444.8 yards)
Elk are bigger, say 32″ across the body, so the same 1.5 mil-dots = 593 yards away. (27.8 x 32″ / 1.5 mil-dots = 593.1 yards)
Target range is critical to knowing what Elevation MOA adjustment to make. Characteristics of your ammunition or cartridge are equally important. More powerful cartridges will shoot flatter and not need as much MOA adjustment for the same range as less powerful cartridges that will fall further and thus need more MOA adjustment.
OptiCo.us has combined Mil-Dot target size and Cartridge Ballistic into one chart for immediate MOA adjustment results!!
Imagine being able to print an MOA adjustment chart for your cartridge ballistics for all mil-dot heights for the target of choice such as antelope, deer, elk, etc. OptiCo.us has even formatted the printing for you. Simply enter your cartridge information, firearm characteristics, zeroing and target shooting conditions, and of course the target size. We’ve even listed typical target sizes for different species. Then print. You can do all of that at home so in the field all you have to do is count Mil-dots and adjust MOA for fast deadly accuracy!
You will need to print a separate chart for each typical target size and firearm details. So for the rifle you’ll take with you, print a chart for each deer, elk and/or antelope, etc. and you’ll be all set.
If you’re the electronics type, you can load the OptiCo.us Ballistic Calculator on your device using an Excel spreadsheet. It will work on smartphones though bigger displays are better. In the spreadsheet, you have control over individual details for full accuracy.
While we are constantly improving the calculators, there is no substitute for target practice!! We suggest you take a printout suitable for your target range and note when your specific marksmanship suggests editing the printed chart to be even more accurate for yourself. Practice counting mil-dots and comparing range results to known distances. Test your total firearm ballistic package vs. the Ballistic Calculator estimate and note what adjustments to make.
Now that you’ve been introduced to the OptiCo.us FFP Ballistic Calculator, follow the link to test how it will improve your accuracy!