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Long Range Hunting & Shooting
Time to move out to 200 yards?
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<blockquote data-quote="Greyfox" data-source="post: 1493393" data-attributes="member: 10291"><p>I began running 200 yards for my zero's and the bulk of my testing for my centerfire rifles used for LR hunting and competition about ten years ago. The major reasons for the use of a 100 Yard zero, besides access to a range beyond 100 yards, are the environmental and wind effects that shooters believe will occur at 200 yards....distorting the ability to rely on accurate ballistic outputs at the longer ranges. In my experience, the difference due effect of wind between 100 and 200 yards will be nil, particularly with .<.5MOA precision rifles. The wind effects will still be seen at 100 yards with the need to be corrected for anyway. In either case it's best to zero with no wind. I have not experienced material differences in POI at 200 yards due to atmospherics(300'-6000' Alt, 10F-80F) with any cartridge that I would use for LR work. Given this, IMO, the major benefit of using a 200 yard zero(and testing) is the "reduced error factor" that may be due to parallax with the higher magnification scopes, load, rifle, rest, shooter etc. A 100 yard error will be magnified 10X at 1000 Yards. At 200 yards, the error factor at 1000 yards is only 5x. At 300 yards, the effect of atmospherics and the ability to determine wind can distort the baseline, perhaps unless the conditions are expected to be fairly constant A 200 yard zero does not prohibit a doing a quick 100 yard zero test in the field if required(compensating for the 200 yard elevation adjustment). In my experience, once my 200 zero, with a properly set up rifle/scope/load is established, I have experienced more consistent zero's and ballistic output precision at long range through a hunting or competition season(or longer) given my load and rifle set-up is unchanged. Additionally, my LR rifle set-ups and shooting techniques seem to have improved since adopting a 200 yard baseline. </p><p>My 6.5x47 shot prone at 200 yards.</p><p>[ATTACH]107596[/ATTACH]</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1493393, member: 10291"] I began running 200 yards for my zero’s and the bulk of my testing for my centerfire rifles used for LR hunting and competition about ten years ago. The major reasons for the use of a 100 Yard zero, besides access to a range beyond 100 yards, are the environmental and wind effects that shooters believe will occur at 200 yards....distorting the ability to rely on accurate ballistic outputs at the longer ranges. In my experience, the difference due effect of wind between 100 and 200 yards will be nil, particularly with .<.5MOA precision rifles. The wind effects will still be seen at 100 yards with the need to be corrected for anyway. In either case it’s best to zero with no wind. I have not experienced material differences in POI at 200 yards due to atmospherics(300’-6000’ Alt, 10F-80F) with any cartridge that I would use for LR work. Given this, IMO, the major benefit of using a 200 yard zero(and testing) is the “reduced error factor” that may be due to parallax with the higher magnification scopes, load, rifle, rest, shooter etc. A 100 yard error will be magnified 10X at 1000 Yards. At 200 yards, the error factor at 1000 yards is only 5x. At 300 yards, the effect of atmospherics and the ability to determine wind can distort the baseline, perhaps unless the conditions are expected to be fairly constant A 200 yard zero does not prohibit a doing a quick 100 yard zero test in the field if required(compensating for the 200 yard elevation adjustment). In my experience, once my 200 zero, with a properly set up rifle/scope/load is established, I have experienced more consistent zero’s and ballistic output precision at long range through a hunting or competition season(or longer) given my load and rifle set-up is unchanged. Additionally, my LR rifle set-ups and shooting techniques seem to have improved since adopting a 200 yard baseline. My 6.5x47 shot prone at 200 yards. [ATTACH]107596[/ATTACH] [/QUOTE]
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Time to move out to 200 yards?
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