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Dialing vs. Holdover For Long Range Hunting
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<blockquote data-quote="Litehiker" data-source="post: 1166227" data-attributes="member: 54178"><p>acourvil, yer keerect, it wuz WWB's posts I saw. Sorry for the mixup.</p><p></p><p>Barrelnut, I agree, most long range shooters, be they hunters or competition shooters, use at least a 20 MOA Pic. rail to get more vertical range, even for 34 mm tubes. And,as you said, it helps keep the crosshairs more toward the optical center of the scope for less distortion.</p><p></p><p> I also agree that good scopes have very little distortion anywhere in the lenses. CAD (Computer Aided Design) has made lens design and zoom tube design, among other factors, so good that the real challenge is to fabricate the lenses and other innards the equal of the design. And CAM (Computer Aided Manufacture) has made lens making and innards making so precise that even "average" glass does very well. The newest ED (Extra-low Dispersion) glass is so good (and so expensive!) that optical distortion is almost eliminated when properly multi-coated.</p><p></p><p>Then there is the advent of molecular deposition lens coating to reduce color distortion and light loss on <em>ever</em>y surface of every lens in even moderately priced scopes. This was first discovered by the Germans. Some of the proprietary coatings and coating processes are closely held as company secrets.</p><p></p><p>Yes, the high end, most expensive scopes still come from Germany and Austria but the Japanese are now making scopes their equal in most respects. Just ask Vortex tactical scope owners, among others. Even Leopold and Nightforce get lenses from Japan.</p><p></p><p>We're living in the "Golden Age of Optics". Now there is even a scope that has a fluid filled lens that can change focus while staying in a fixed position by changing shape!</p><p></p><p>And marrying optics to laser rangefinders and angle sensors (as in the Burris Eliminator III as well as LRF binoculars) is now commonplace. WOW!</p></blockquote><p></p>
[QUOTE="Litehiker, post: 1166227, member: 54178"] acourvil, yer keerect, it wuz WWB's posts I saw. Sorry for the mixup. Barrelnut, I agree, most long range shooters, be they hunters or competition shooters, use at least a 20 MOA Pic. rail to get more vertical range, even for 34 mm tubes. And,as you said, it helps keep the crosshairs more toward the optical center of the scope for less distortion. I also agree that good scopes have very little distortion anywhere in the lenses. CAD (Computer Aided Design) has made lens design and zoom tube design, among other factors, so good that the real challenge is to fabricate the lenses and other innards the equal of the design. And CAM (Computer Aided Manufacture) has made lens making and innards making so precise that even "average" glass does very well. The newest ED (Extra-low Dispersion) glass is so good (and so expensive!) that optical distortion is almost eliminated when properly multi-coated. Then there is the advent of molecular deposition lens coating to reduce color distortion and light loss on [I]ever[/I]y surface of every lens in even moderately priced scopes. This was first discovered by the Germans. Some of the proprietary coatings and coating processes are closely held as company secrets. Yes, the high end, most expensive scopes still come from Germany and Austria but the Japanese are now making scopes their equal in most respects. Just ask Vortex tactical scope owners, among others. Even Leopold and Nightforce get lenses from Japan. We're living in the "Golden Age of Optics". Now there is even a scope that has a fluid filled lens that can change focus while staying in a fixed position by changing shape! And marrying optics to laser rangefinders and angle sensors (as in the Burris Eliminator III as well as LRF binoculars) is now commonplace. WOW! [/QUOTE]
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