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Hunting
Long Range Hunting & Shooting
Why elevation changes between shots at 1000?
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<blockquote data-quote="nmbarta" data-source="post: 1414227" data-attributes="member: 78438"><p>How good is your SD/ES with that load?</p><p>When I see vertical spreads at 1000 is it almost always my load causing it.</p><p>Could be brass that's getting close to it's end causing inconsistent neck tension, (I don't anneal)</p><p>Could be a dirty barrel causing velocity spreads.</p><p>Could be a new lot of powder/bullets/brass.</p><p>a 30fps spread with my 7mm will cause around a 7" vertical spread at 1000, combine that with tail wind going over a hill and you've got your 12" of vertical easy.</p><p>This is why I'll usually take the load with the lowest sd's even if I have a load that shoots slightly better at 200.</p><p>I'd shoot a few over the chronograph just to rule that out, if your sd's are good, it's probably just wind, weird things happen at 1000+</p></blockquote><p></p>
[QUOTE="nmbarta, post: 1414227, member: 78438"] How good is your SD/ES with that load? When I see vertical spreads at 1000 is it almost always my load causing it. Could be brass that's getting close to it's end causing inconsistent neck tension, (I don't anneal) Could be a dirty barrel causing velocity spreads. Could be a new lot of powder/bullets/brass. a 30fps spread with my 7mm will cause around a 7" vertical spread at 1000, combine that with tail wind going over a hill and you've got your 12" of vertical easy. This is why I'll usually take the load with the lowest sd's even if I have a load that shoots slightly better at 200. I'd shoot a few over the chronograph just to rule that out, if your sd's are good, it's probably just wind, weird things happen at 1000+ [/QUOTE]
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Why elevation changes between shots at 1000?
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