Quote History Quoted:Not the most precise tool.
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Which is why you turn it down -- one thing I like about the Swaro z8i system (BRT-I reticle) is that it has an open center but there is a slightly shaded circle where the dot appears when it's on.
When shooting for precision I can turn the dot from full bright to off with the flick of a switch, place the target in the center of that tiny shaded area (1/2" paster at 100yd centers up nicely) and make a very precise shot.
If I want a little illumination (say shooting long range into shaded area) I'll use the night-mode side of the 3-way illum switch to tone down the brightness when making long shots in competition, then either leave it as is for close shots or with a swipe of the thumb (probably while cranking the zoom from 8 to 1) restore my usual bright dot setting on day mode.
Some people don't like the Swaro light setup, but in my opinion it's ideal.