I'm up grading my rifle scope this year and would it be better to move up to the larger 30mm diameter? It's just an old rem 700 30-06. My current mounts are a old burris 1" dovetail rings. Not planning to do any long range hunting. If I keep the 1" size I've picked out the vortex diamond back HP scope.
Since you're not using it for more MOA for longrange, your only advantage would be better light gathering at that last short, fleeting, nanosecond of light when the big buck MIGHT step out. A 30mm's advantage isn't that much over a 1" tube in that reguard.
The larger tube has nothing to do with light gathering ability. It simply allows for more movement inside the scope. Which means more MOAs you can dial up, down, or sideway. The amount of light that can pass through your scope is determined by the size of the objective lens, and the magnification of the scope. The quality of the glass and coatings are also a factor. I don't think you will be disappointed with the Diamondback HP. It is a very nice scope.
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