I have to agree. While a young'en might be able to utilize a 6 or even 7mm exit pupil few of us can do that by 40 much less 50. A 36mm scope at 8x will give you an exit pupil of 4.5mm. That's plenty and just a tad more than 9x magnification with a 40mm objective. At that point what's going to matter more for those of us over 40 is the quality of the glass and the coatings that the manufacturer uses. In other words is 98% of the light gathered passing through to the eye or only 90 or 94% and is the view crystal clear or a bit fuzzy. Neither of those should be any issue with a top-notch scope like a VX-3 or any of the other scopes in its class.Not true, as I and many hunters I know have used such scopes for many years. My only variable is a Leupold 2.5X8 with a 36MM objective. It provides more than adequate brightness even before or after legal shooting times.
Assuming good glass then for reasonably bright daylight shooting a 2.5mm exit pupil be fine and while 4mm+ comes in handy when light starts fading.
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