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Hunting
Long Range Hunting & Shooting
not accurate at 100 but accurate at 200
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<blockquote data-quote="Bullet bumper" data-source="post: 954049" data-attributes="member: 17844"><p>Simple , the bullet starts out the barrel with a wobble that will cause group expansion at close range but as the bullet progresses down range the Dynamic stability gets over the wobble and settles the bullet down so groups tighten suddenly . </p><p>The factors listed above can make it worse or better depending on which way they are . </p><p>Many people are using a flat base bullet with no real problems but then they try to use a VLD the same way and some times the launch conditions are not suitable for that design to work it's best .</p><p>Don't get group accuracy and basic POI Zero accuracy mixed up. Slightly different things. You can shoot a tight group but still be feet away from where you should be zeroed . You can be zeroed as best you can but still fire a 3 foot diameter group all around that zero . Except for wind influences and spin drift the bullet can not change it basic line of zeroed trajectory outside of it's group spread potential . So if you are zeroed 6 inch to the left of the target centre then you are going to group to the left if no wind or spin drift does otherwise but the overall group size could change .</p><p>That is the good thing about being able to shoot a tight group you can then adjust a more precise zero , not withstanding click value .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 954049, member: 17844"] Simple , the bullet starts out the barrel with a wobble that will cause group expansion at close range but as the bullet progresses down range the Dynamic stability gets over the wobble and settles the bullet down so groups tighten suddenly . The factors listed above can make it worse or better depending on which way they are . Many people are using a flat base bullet with no real problems but then they try to use a VLD the same way and some times the launch conditions are not suitable for that design to work it's best . Don't get group accuracy and basic POI Zero accuracy mixed up. Slightly different things. You can shoot a tight group but still be feet away from where you should be zeroed . You can be zeroed as best you can but still fire a 3 foot diameter group all around that zero . Except for wind influences and spin drift the bullet can not change it basic line of zeroed trajectory outside of it's group spread potential . So if you are zeroed 6 inch to the left of the target centre then you are going to group to the left if no wind or spin drift does otherwise but the overall group size could change . That is the good thing about being able to shoot a tight group you can then adjust a more precise zero , not withstanding click value . [/QUOTE]
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Hunting
Long Range Hunting & Shooting
not accurate at 100 but accurate at 200
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