and beyond 500m impossible. so there is no such thing as having "more range" than 223 can match, if you just have enough sense to hole up in daylight, if stuck in open country.
NVD goggles CAN'T see BOTH your iron sights (even luminous) AND the target, at much distance all. You have to FOCUS the goggles, either on the sights, or "infinity" (ie, the target) To use them well reqires that you ALSO have a laser or IR sight on the rifle. MORE electronics to go-bad on you, in the rain, cold, when you drop the rifle, go prone (being shot at)etc.
NVD goggles CAN'T see BOTH your iron sights (even luminous) AND the target, at much distance all. You have to FOCUS the goggles, either on the sights, or "infinity" (ie, the target) To use them well reqires that you ALSO have a laser or IR sight on the rifle. MORE electronics to go-bad on you, in the rain, cold, when you drop the rifle, go prone (being shot at)etc.