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Long Range Hunting & Shooting
Reasonable Expectation(s)???and left and right?
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<blockquote data-quote="jsnell" data-source="post: 1422065" data-attributes="member: 91124"><p>Some of my observations may be helpful.</p><p>Nightforce has since the NXS days used a strong, highly polished Titanium spring to center the erector tube. They do this to achieve repeatability, and I believe they are the only company doing it that way.</p><p></p><p>This in my experience is the most likely cause of the symptoms you describe (failure to return to setting). An old trick was to first, always dial against the spring (it sits at 7:30, or there is one at 9:00 and another at 6:00), so you would dial over and then back to compress against the spring, and second, give the turret a thump with your knuckle to 'settle' it.</p><p></p><p>No scope, regardless of cost is going to always move exactly 30 MOA for a 30 MOA input (across a large sample of scopes), but almost all Vortex and higher quality scopes will move the same amount in either direction repeatedly. When you perform a 'Tall Target Test' you will measure the rate at which your turrets move your crosshair, and calculate an adjustment factor. Any ballistics solver worth having will use your measured adjustment factor to improve its solution. If you don't want to use a solver, then use a DOPE book, and record enough information to be useful in the field. Better yet, do both solver and DOPE.</p><p></p><p>Bottom line is that you don't need to spend a lot to get a scope that will work for long range, but you do need to document the operation of the scope to successfully achieve first round hits.</p><p></p><p>Another observation; time is a greater threat to your scope's ability than recoil. An old scope may seem ok, until you get results similar yours. Could be caused by grease inside the scope becoming hard, or could have been wiped off by operation, in any case it might be correctable by returning scope for service.</p></blockquote><p></p>
[QUOTE="jsnell, post: 1422065, member: 91124"] Some of my observations may be helpful. Nightforce has since the NXS days used a strong, highly polished Titanium spring to center the erector tube. They do this to achieve repeatability, and I believe they are the only company doing it that way. This in my experience is the most likely cause of the symptoms you describe (failure to return to setting). An old trick was to first, always dial against the spring (it sits at 7:30, or there is one at 9:00 and another at 6:00), so you would dial over and then back to compress against the spring, and second, give the turret a thump with your knuckle to 'settle' it. No scope, regardless of cost is going to always move exactly 30 MOA for a 30 MOA input (across a large sample of scopes), but almost all Vortex and higher quality scopes will move the same amount in either direction repeatedly. When you perform a 'Tall Target Test' you will measure the rate at which your turrets move your crosshair, and calculate an adjustment factor. Any ballistics solver worth having will use your measured adjustment factor to improve its solution. If you don't want to use a solver, then use a DOPE book, and record enough information to be useful in the field. Better yet, do both solver and DOPE. Bottom line is that you don't need to spend a lot to get a scope that will work for long range, but you do need to document the operation of the scope to successfully achieve first round hits. Another observation; time is a greater threat to your scope's ability than recoil. An old scope may seem ok, until you get results similar yours. Could be caused by grease inside the scope becoming hard, or could have been wiped off by operation, in any case it might be correctable by returning scope for service. [/QUOTE]
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