I sighted my EOTech in at 100 yards, but I also have the EOTech magnifier. After two adjustments I put 6 rounds in less than a 2" group. Without the magnifier I wouldn't have been able to get this group at that distance, so a 6-7" group with just the red dot sounds pretty good to me. I've got a 20" barrel on my AR and that also helps.
Once you have had a wonderful dog, a life without one, is a life diminished. - Dean Koontz
STI Eagle (2), STI Trojan (2), STI Edge, STI Guardian, STI Sentinel, STI VIP, STI Ranger, STI Tactical 4.0, STI Rogue, STI Escort, 1943 Remington Rand 1911A1