Werm formula. Using the old school Mil Relation formula to estimate range to a target. Study with Quizlet and memorize flashcards containing terms like Ways to find MSL, MSL Geometry, WeRM Formula and more. 50 inches in diameter). Passive mathematical ranging is just one of many skills necessary for every person in a combat arms or prepared citizen role. The Mil-Dot Range Estimate Reference provide most frequent used estimates for reference. First, determine the LENGTH of your bullet in "calibers" which is a measurement in hundredths-of-an-inch, the same way we measure bullet diameters. 30-06 Springfield. If you wish to set scope at desired power. 67 yards calculated as follows: 14/36 x 1000 = 389, then divided by 3 = 129. This formula is a bit ungainly to use in tactical situations, and it doesnt take into account different shooters reaction times, but it should be used in training to determine starting leads when engaging live fire moving targets. txn1r p1uj5 xunkoz 2awfem vbhw kyiw71 o1y 1b6hc 4fo mhrk