When a definitive gauge is established that gives the exact or near exact maximum distance a deer will/can run in accordance with a wound received, I will be first in line to purchase one.

Just think: The standard shows that a buck hit through both lungs can only run a maximum of 40 (flat) yards.

Stick a rod in the ground where the buck was hit, tie a forty-foot cord on the rod having a swivel loop, hold on the end of the cord and walk in a circle while marking with line chalk, search only the area inside the 40 foot marked circle. If the buck is not in the circle, he did not die and will be back another day.