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Yup, the bigger the magnifying glass, the more light passing through, more heat.

That makes even less sense.

I have a Sightron SFP SIII 6-24 mil/mil. It's a great scope and suits the F Class shooting I do well. I just wish it had the Mildot reticle with the halfway hash thingys. Nibblet on here has a 8-32...

I find that hard to believe, simple physics. Would a 5mm tube allow the same light through as a 50mm? I would think not, it's the same theory as a water pipe, just with photons. Maybe having a bigger...