Which is better...a 40mm or 50mm front objective scope?

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ARshooter

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I'm considering getting a 36X scope for load testing only. The company offers this scope in 40 and 50 mm front objective sizes. I know that the larger one will allow more light to come in but since I will not be using it near dusk or dawn, is it really an advantage? Are there any disadvantages?

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ArmySon

Staff Alumnus
Moving to the Accessories Forum. Check for this thread there.

The 50mm scope will give you a slight advantage in field of view. The key issue to a scope allowing more light is not the size of the lense but the quality. Plus, the different types and quality of coatings prevent glare. With a cheap scope, light is reflected inside the scope, eventually joining the light intended to be viewed. This results in a washed-out look. So basically, whether you're going for a 40 or 50 is not as important as the quality of the scope. If you list the brands you're interested in, I'm sure we can give you a better breakdown on the scope.

FWIW
Son
 
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