Thanks for the photos, Zak! You’re making me anxious to shoot. I hope we’ll get our 3-gun matches rolling again this month . . . I hope!
It also bothers me that not only does Zak shoot far better than I do, but he’s also a much better photographer. And I suspect he did better on the SAT and GRE exams as well.
I'm not Zak either ;) , but I use to do the same thing with a piece of electrical tape to cover the fiber optic on top of my ACOGs.
On very bright days, the sunlight can make the fiber optic lit reticle [b]too bright[/b] and can make the edges of the reticle "star" (for lack of a better term).
The best comparision I could think of is; when using Aimpoint, you turn the power knob on the Aimpoint to position #7 and the red dot is round, bright, and round (the dot is well defined with crisp edges, and is not "starring"). Then turn the dial up to position #9 or #10, and you will notice that the round dot, is no longer perfectly round and now looks somewhat like a star.
When the sun is extreemly bright, a simular thing happens to the reticle on a ACOG that uses fiber optic. By covering most of the fiber optic you can keep the reticle red, and the edges will be perfectly round and crisp and won't "star".
Cool, thanks guys… That’s what I thought, now I have confirmation…Oh and by the Way Jeff… I have a TA-11D ACOG with a LaRue QD mount in route…Thanks to you and Zak…
That’s why I wanted to know…
Sorry, guys, was out for 2 days shooting bolt rifles in NM.
Bright is great for speed, but very bright things also appear larger and make reduce the ability to discern contrast nearby. For more precise, longer-range, or low-contrast targets, a dimmer (or black) donut is very helpful.
I did make hits on a 700-yard 12x18" steel plate using my 12" SBR and a TA11 ACOG this weekend.