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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Allen Xpress, first load developement session....
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<blockquote data-quote="Jon A" data-source="post: 162241" data-attributes="member: 319"><p>Here's a possibility:</p><p></p><p>Especially with a light rifle that has some recoil, the way you hold it can make a big difference. It sounds like you were in a different place with a different setup on the long shots vs the short shots. It may be something as simple as holding the rifle differently, being on the front rest differently, pushing back against the recoil differently, etc. So your POI might have changed a tiny bit between setups. Maybe you were holding the rifle in such a manor at 450 that you would have hit 2.5" high at 100 had you been shooting that distance at that time. Just a possibility.</p><p></p><p>Another is scope error. Be sure the reticle doesn't move as you adjust the parallax knob or when power is changed (if you weren't on the highest power for both). A collimator of some type (optical boresighter with a grid) is perfect to check for these things.</p></blockquote><p></p>
[QUOTE="Jon A, post: 162241, member: 319"] Here's a possibility: Especially with a light rifle that has some recoil, the way you hold it can make a big difference. It sounds like you were in a different place with a different setup on the long shots vs the short shots. It may be something as simple as holding the rifle differently, being on the front rest differently, pushing back against the recoil differently, etc. So your POI might have changed a tiny bit between setups. Maybe you were holding the rifle in such a manor at 450 that you would have hit 2.5" high at 100 had you been shooting that distance at that time. Just a possibility. Another is scope error. Be sure the reticle doesn't move as you adjust the parallax knob or when power is changed (if you weren't on the highest power for both). A collimator of some type (optical boresighter with a grid) is perfect to check for these things. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Allen Xpress, first load developement session....
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