The ballistic compensation information can be indexed by density altitude level to enable {HEAD ~ adjustment} of the firearm scope to adjust for varying atmospheric conditions and {TAIL ~ range distances} 
to adjust for varying
The ballistic compensation information can be indexed by density altitude level to enable { HEAD ~ adjustment } of the firearm scope to adjust for varying atmospheric conditions and { TAIL ~ range distances }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL