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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
POI shift with magnification change?
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<blockquote data-quote="esshup" data-source="post: 2081620" data-attributes="member: 11101"><p>Another thing that he's got going on is that he wants to shoot a 180g .30 cal bullet @ 1600 fps (300 Blackout) and expects to be able to determine where a 195g 30 cal bullet @ 1050 fps will be impacting from just using a ballistic program. I have no idea what his sight height is. He missed a few hogs at 20-50 yds shooting the 195g bullet at night when he only had shot the 180g bullet at paper/steel. Supposedly he had the 180g sighted in @ 100 yds. (AR-15)</p><p></p><p>I told him that it was impossible to do without knowing where the 195g bullet was impacting. He's using the fps data from the side of the box for the 180g bullet, from the loading books for the 195g, no chronograph........</p></blockquote><p></p>
[QUOTE="esshup, post: 2081620, member: 11101"] Another thing that he's got going on is that he wants to shoot a 180g .30 cal bullet @ 1600 fps (300 Blackout) and expects to be able to determine where a 195g 30 cal bullet @ 1050 fps will be impacting from just using a ballistic program. I have no idea what his sight height is. He missed a few hogs at 20-50 yds shooting the 195g bullet at night when he only had shot the 180g bullet at paper/steel. Supposedly he had the 180g sighted in @ 100 yds. (AR-15) I told him that it was impossible to do without knowing where the 195g bullet was impacting. He's using the fps data from the side of the box for the 180g bullet, from the loading books for the 195g, no chronograph........ [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
POI shift with magnification change?
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