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Hunting
Extreme Long Range Hunting & Shooting (ELR)
Range finder plus wind meter
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<blockquote data-quote="LRNut" data-source="post: 2268096" data-attributes="member: 3230"><p>QuietTexan also posted:</p><p>MPBR brackets are great for hunting because the vitals zone is large enough to make range less impactful on a shot than wind. You figure out progressively longer "zeros" of something like 100 - 200 - 450 - 700, and the bracket on each range keeps you within +/-4" of POA=POI.</p><p>100 yard zero - baseline</p><p>0-350 yards - up 0.9 mil (+0.9 total)</p><p>350-550 yards - up 1.2 mil (+2.1 total)</p><p>550-850 yards - up 1.7 mil (+3.9total)</p><p></p><p>A 10,000 ft change in DA is .1 mils? It is a lot more than that at 700 yards, and even more at 900 or farther. At 850 yards the difference for a 28 Nosler is almost 2 MOA. I know from experience because I shoot at elevations of 8750 and 1400 year round.</p><p></p><p>I also don't understand your MPBR brackets above. Are you saying from 550 to 850 you dial up 3.9 mils for any shot in this range bracket? Even if it kept you within 4" half your bullets are going to hit above or below that, which is going to cause a vertical miss half the time. A 28 Nosler launching a 195 at 2995 requires 7.6 MOA (or 2.1 mils) of elevation. At 850 the number is 16.1 MOA or 4.47 mils. Splitting the difference would be 3.3 mils (rounded to nearest .1), which means you are 1.2 mils high at 550 and 1.1 mils low at 850, which is a miss on both counts. There is nearly 100 inches of total drop difference between 550 and 850.</p><p></p><p>What am I missing?</p></blockquote><p></p>
[QUOTE="LRNut, post: 2268096, member: 3230"] QuietTexan also posted: MPBR brackets are great for hunting because the vitals zone is large enough to make range less impactful on a shot than wind. You figure out progressively longer "zeros" of something like 100 - 200 - 450 - 700, and the bracket on each range keeps you within +/-4" of POA=POI. 100 yard zero - baseline 0-350 yards - up 0.9 mil (+0.9 total) 350-550 yards - up 1.2 mil (+2.1 total) 550-850 yards - up 1.7 mil (+3.9total) A 10,000 ft change in DA is .1 mils? It is a lot more than that at 700 yards, and even more at 900 or farther. At 850 yards the difference for a 28 Nosler is almost 2 MOA. I know from experience because I shoot at elevations of 8750 and 1400 year round. I also don't understand your MPBR brackets above. Are you saying from 550 to 850 you dial up 3.9 mils for any shot in this range bracket? Even if it kept you within 4" half your bullets are going to hit above or below that, which is going to cause a vertical miss half the time. A 28 Nosler launching a 195 at 2995 requires 7.6 MOA (or 2.1 mils) of elevation. At 850 the number is 16.1 MOA or 4.47 mils. Splitting the difference would be 3.3 mils (rounded to nearest .1), which means you are 1.2 mils high at 550 and 1.1 mils low at 850, which is a miss on both counts. There is nearly 100 inches of total drop difference between 550 and 850. What am I missing? [/QUOTE]
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Range finder plus wind meter
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