I know what you talking about - currently, aiming down sights only reduces spread by, I think, 35% - which is ridiculous, because I find myself aiming at a raider, probable about 60, 70 yards away, PERFECTLY DEAD-ON i.e. my sight post is kissing the guys head, and then I pull the trigger, and it misses. I make sure that it isn't a misalignment, by going to a random place and checking how much the rifle is off by, when shooting a fixed point - then I find that there is an actual conical spread mechanic in the game. If I had a rifle that did that at that sort of distance in real life, then I'd ask for my money back!!!