This is from the Ballistic website
"Ballistic automatically calculates your minimum and maximum point blank ranges based on your zero and the vital zone radius you specify, and will display these in the form of red arrows. The JBM engine can also calculate your optimum point blank range and will display this in each calculation. In addition to this, the sonic boundary will be marked with a yellow line."
"Ballistic automatically calculates your minimum and maximum point blank ranges based on your zero and the vital zone radius you specify, and will display these in the form of red arrows. The JBM engine can also calculate your optimum point blank range and will display this in each calculation. In addition to this, the sonic boundary will be marked with a yellow line."


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