Greetings! First post,need a little help, shooting 300 winmag with a zeiss zplex 800 I bought the g7 rangefinder and was building the profile for BDC and it's asking for the turret temp and altitude ? I can't find anything in the little zeiss booklet or on line about the temp that they built the reticle at . Am I missing something? Any help would be greatly appreciated! I have a Barbary sheep hunt in Terlingua Tx next week expecting some long shots with incline! Thanks!