Post by bull on Jul 23, 2004 18:42:44 GMT -5
I recently came up against a goofy scenario where I needed to accurately measure items at closer than normal ranges. For the record it is to assist explosive breaching. I assure you I will not be close enough to get fragged, but during training I had a dilema.
If you scope is set to mil on one power, everyone knows the formula. size in inches x 27.77 divided by mils = range. My Nightforce mils on 22x, how can I figure a constant for 5.5x. I figured the highe end constant for my Leupold. It mils at 12x, the constant for 20x is 54.1. This in turn gave me a mil relation of 1 to 1.95. (holding wind on 20x each mil equals 1.95) I don't remember exactly how I did it. I was able to duplicate the formula using a known size measured in mils on the appropriate power.
The problem is no matter how many times I try for 5.5x, different sizes show different ranges.
Example: I measure the following at 5.5 x
11 inches = .750 mils at 100 yards
11 inches = .625 mils (maybe a tad less) at 200 yards
11 inches = .425 mils at 300 yards
8.5 inches = .250 mils at 300 yards
Sorry for the long post, but I know there are those here that can do the math. I admit it's not an everyday use problem, just trying to give myself more versatility. Those blow stuff up guys want to know lots about doors, windows and walls.
K. Divers
If you scope is set to mil on one power, everyone knows the formula. size in inches x 27.77 divided by mils = range. My Nightforce mils on 22x, how can I figure a constant for 5.5x. I figured the highe end constant for my Leupold. It mils at 12x, the constant for 20x is 54.1. This in turn gave me a mil relation of 1 to 1.95. (holding wind on 20x each mil equals 1.95) I don't remember exactly how I did it. I was able to duplicate the formula using a known size measured in mils on the appropriate power.
The problem is no matter how many times I try for 5.5x, different sizes show different ranges.
Example: I measure the following at 5.5 x
11 inches = .750 mils at 100 yards
11 inches = .625 mils (maybe a tad less) at 200 yards
11 inches = .425 mils at 300 yards
8.5 inches = .250 mils at 300 yards
Sorry for the long post, but I know there are those here that can do the math. I admit it's not an everyday use problem, just trying to give myself more versatility. Those blow stuff up guys want to know lots about doors, windows and walls.
K. Divers
