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    MERC - Maximum Effective Range Calculator

    ...continued... Ok, set Range uncertainty back to zero. Now let's set wind speed uncertainty to 20%. Because the wind speed for each shot is different than the nominal wind speed that you hold for, your hits will spread out horizontally. Let's set wind speed uncertainty back to zero, and...
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    MERC - Maximum Effective Range Calculator

    I wanted to demonstrate the effect of each one of the uncertainty parameters individually. It is helpful to understand how each parameter is contributing to your shot dispersion at range. For this analysis, I am using a 6.5 PRC with 143 ELDX shooting at a 6.282" diameter target (1 MOA at 600...
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    MERC - Maximum Effective Range Calculator

    Here is an example of one use for MERC. How much does wind angle uncertainty matter when you are shooting with a headwind or tailwind? Situation: Shooting a 6.5 PRC with 143 ELDX into a 10mph headwind. The shooter has to estimate the direction of the wind. There will always be some error in...
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    MERC - Maximum Effective Range Calculator

    Updated the Download link for MERC.
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    MERC - Maximum Effective Range Calculator

    I recently created a Microsoft Excel based tool that calculates your probability of hitting a target. It allows study of the effects of rifle and environmental variables and uncertainties on hit percentage. Read below, and check out the screenshot to see what it’s all about. I am sharing this...

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