Embodiments of the present invention relate generally to systems and devices for resolving factors affecting {HEAD ~ the trajectory} of {TAIL ~ a bullet} fired from a firearm 
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Embodiments of the present invention relate generally to systems and devices for resolving factors affecting { HEAD ~ the trajectory } of { TAIL ~ a bullet } fired from a firearm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH