Point A: The shooter
Point B: The recording device
Point C: extend the line drawn from point A to B to distance in the 2nd chart
point X: bullet striking the ground

Lag Time (calculated distance from A to X):
- Point X is between point A and B
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Distance | Lag Time
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100y		 | .164s
200y		 | .311s
300y		 | .434s
400y		 | .528s
500y		 | .584s

Lag Time (Assume Point B is 400y from point A)
- Point B is in-between point A and X
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Distance | Lag Time
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25y			 | .412s (false shooter @ ~275yards)
50y      | .294s (false shooter @ ~200 yards)
75y      | .175s (false shooter @ ~100 yards)
100y     | .053s (false shooter @ point blank)