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The Basics, Starting Out
MOA/Mills???
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<blockquote data-quote="sscoyote" data-source="post: 364792" data-attributes="member: 1133"><p>I'm gonna assume you were about 18" low at 430 yds. assuming an avg. trajectory. That's 4.2 SMOA (18/4.3). 4.2/3.6 = 1.2 mil holdover.</p><p></p><p>Assuming this trajectory to be ~correct (and assuming u were at the correct magnification for the mil subtensions to be correct at 3.6 IPHY) and u hit 6" high at 430 yds. then u're off by 0.4 mil (6/4.3/3.6=0.4).</p><p></p><p>Remember though--these calcs aren't done in the field. All this should be calcd. beforehand and put someplace for quick reference. Almost every ballistics program has drop in mils these days, so u don't often even have to calculate it.</p></blockquote><p></p>
[QUOTE="sscoyote, post: 364792, member: 1133"] I'm gonna assume you were about 18" low at 430 yds. assuming an avg. trajectory. That's 4.2 SMOA (18/4.3). 4.2/3.6 = 1.2 mil holdover. Assuming this trajectory to be ~correct (and assuming u were at the correct magnification for the mil subtensions to be correct at 3.6 IPHY) and u hit 6" high at 430 yds. then u're off by 0.4 mil (6/4.3/3.6=0.4). Remember though--these calcs aren't done in the field. All this should be calcd. beforehand and put someplace for quick reference. Almost every ballistics program has drop in mils these days, so u don't often even have to calculate it. [/QUOTE]
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