I don't believe the claims of red dot manufacturers that claim their sights only subtend 1" at 100 yds...It would need to be an awful bright dot or a very dark backround to even see a dot that small... with the cheaper illuminated sights using a rheostat, a 1" dot may be possible at the lowest setting, but at that setting the intensity is so low you cannot distinguish the dot in normal light, and turning up the intensity increases the "flare" which increases the apparent size of the dot. I see no use for red dot sights on any gun that will be shot at 100+ yds....a low power fixed magnification scope would be cheaper and more effective IMO...unless you are in a combat situation...
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Last edited by RL357Mag; 07-25-2009 at 10:00 PM.