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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
40mm vs 50mm in new VX3
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<blockquote data-quote="John Burns" data-source="post: 309525" data-attributes="member: 2164"><p>For me the 50mm is better for the following reasons:</p><p></p><p>• Better resolution. With all other factors being equal a larger objective will offer better resolution or the ability to see detail better. A scope with better resolution will offer better low light performance.</p><p></p><p>• Larger exit pupil. A larger exit pupil allows the shooter to better spot his own hits and to acquire targets faster under stress.</p><p></p><p>o At 14X a 50mm has an exit pupil of 3.6mm </p><p>o At 14X a 40mm has an exit pupil of 2.9mm</p><p></p><p>• Slightly shorter overall length makes up for the slightly larger objective</p><p></p><p>• My stocks have very little drop at the comb to keep the recoil straight back and to minimize muzzle climb. I mount all my scopes 1.7 above bore line and this clears either 40mm or 50mm with my barrel contours.</p><p></p><p>I am going to agree that the imported glass has gained a lot over the years but disagree that Leupold has not gained. The trend is everyone's glass getting better and the choice comes down to other factors such as drop compensating turrets, reticle options, MOA per rotation, repeatable adjustments, ultimate durability, compact size, warranty service, ect.</p><p></p><p>I can build the Greybull Precision Hunting Optic on a 40mm if someone wants it and we used to sell about 1 out of 20 with the 40mm although we seem to be selling fewer nowadays. We don't have 40mm in stock so expect about 3 weeks to get a 40 if you decide it is a better fit for you and your applications.</p></blockquote><p></p>
[QUOTE="John Burns, post: 309525, member: 2164"] For me the 50mm is better for the following reasons: • Better resolution. With all other factors being equal a larger objective will offer better resolution or the ability to see detail better. A scope with better resolution will offer better low light performance. • Larger exit pupil. A larger exit pupil allows the shooter to better spot his own hits and to acquire targets faster under stress. o At 14X a 50mm has an exit pupil of 3.6mm o At 14X a 40mm has an exit pupil of 2.9mm • Slightly shorter overall length makes up for the slightly larger objective • My stocks have very little drop at the comb to keep the recoil straight back and to minimize muzzle climb. I mount all my scopes 1.7 above bore line and this clears either 40mm or 50mm with my barrel contours. I am going to agree that the imported glass has gained a lot over the years but disagree that Leupold has not gained. The trend is everyone's glass getting better and the choice comes down to other factors such as drop compensating turrets, reticle options, MOA per rotation, repeatable adjustments, ultimate durability, compact size, warranty service, ect. I can build the Greybull Precision Hunting Optic on a 40mm if someone wants it and we used to sell about 1 out of 20 with the 40mm although we seem to be selling fewer nowadays. We don’t have 40mm in stock so expect about 3 weeks to get a 40 if you decide it is a better fit for you and your applications. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
40mm vs 50mm in new VX3
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