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Hunting
Long Range Hunting & Shooting
Elevation effects on bullet trajectory
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<blockquote data-quote="oldmossy" data-source="post: 2133152" data-attributes="member: 44047"><p>I have 3 experiences ive personally seen. </p><p>1- yrs ago hunting groundhogs during the summer. I could shoot a pig at 300 yds early in the day. And that afternoon, same hold, same hole, miss high when the temperature was alot hotter. </p><p>2- The first time I shot my rifle in question past 200yds. Me and my friend each had our identical custom rifles fresh from gunsmith. After he broke in rifles and developed loads and we got 200yd zeros. I began shooting them at daylight on a cool sept morning. Wanting as cool a temp as possible. Since we shoot specifically for hunting. Shot our first shots. Firing each rifle 2 shots at 767yds. Then going to check target allowing barrels adequate cooling. Wanting a cold bore ritual if u will. Got moa fine tined, Then fog rolled in and I couldnt shoot until much later. Then once fog burned off I continued shooting. Over the course of about 3 hrs between first shots and last shots, the temperature rose alot. Im thinking 30plus degrees. My last 2 shots from my rifle was less than 3 inches at 767yds with my rifle. And amazingly for my ability, 1.5 inches shooting his gun. Still, only two shot groups per rifle. But rather good in my book. However, those last shots were almost 1 moa higher than when we started. As the temp increased throughout the day we had to keep dialing less.</p><p>3- the day in qusetion. 30dergree dropin temp..1.5 moa drop in impact. </p><p>Im not disagreeing with your real world data. Im simply trying to figure out what could be causing me to see such a swing in impacts. I shoot off a backpack to simulate real hunting. And I shoot as much free recoil as possible to try and limit my influence on the rifle. Im just a hunter. No training or guidance other than reading on this forum and watching youtube. Still learning. And also learning that sometimes things dont work like Ive already proved to myself they do.lol</p></blockquote><p></p>
[QUOTE="oldmossy, post: 2133152, member: 44047"] I have 3 experiences ive personally seen. 1- yrs ago hunting groundhogs during the summer. I could shoot a pig at 300 yds early in the day. And that afternoon, same hold, same hole, miss high when the temperature was alot hotter. 2- The first time I shot my rifle in question past 200yds. Me and my friend each had our identical custom rifles fresh from gunsmith. After he broke in rifles and developed loads and we got 200yd zeros. I began shooting them at daylight on a cool sept morning. Wanting as cool a temp as possible. Since we shoot specifically for hunting. Shot our first shots. Firing each rifle 2 shots at 767yds. Then going to check target allowing barrels adequate cooling. Wanting a cold bore ritual if u will. Got moa fine tined, Then fog rolled in and I couldnt shoot until much later. Then once fog burned off I continued shooting. Over the course of about 3 hrs between first shots and last shots, the temperature rose alot. Im thinking 30plus degrees. My last 2 shots from my rifle was less than 3 inches at 767yds with my rifle. And amazingly for my ability, 1.5 inches shooting his gun. Still, only two shot groups per rifle. But rather good in my book. However, those last shots were almost 1 moa higher than when we started. As the temp increased throughout the day we had to keep dialing less. 3- the day in qusetion. 30dergree dropin temp..1.5 moa drop in impact. Im not disagreeing with your real world data. Im simply trying to figure out what could be causing me to see such a swing in impacts. I shoot off a backpack to simulate real hunting. And I shoot as much free recoil as possible to try and limit my influence on the rifle. Im just a hunter. No training or guidance other than reading on this forum and watching youtube. Still learning. And also learning that sometimes things dont work like Ive already proved to myself they do.lol [/QUOTE]
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