Perhaps I should rephrase "I can't shoot with iron sights any more". I can shoot with iron sights, I just can shoot much better with a scope. When I say fuzzy I mean I can see the irons OK, the distant target hardly can be seen, it is not just fuzzy. I use 1" diamonds at 100 yards, I can't see it. I use the tricks like setting the target on top of the bead, but if you can't see the diamond then you can't hit it. That is just the way it is. If I focus on the target, the front sight (bead) almost disappears, you have to make sure the front sight is snugged in the bottom of the rear sight! I used to shoot with irons all the time and they still cannot be beat for a quick running shot, which I can do, it does not have to be that precise. But a ghost ring really works better for that. When I was younger and shot 22 rimfire all the time. I could not afford a scope so you do what you can, I used iron sights and I still can if I needed to, but I still will shoot better with optics because I can see the target better. Now that I have aged a little, I can't do as well as I used to. You can say it does not make any difference, but I know what I can and can't do and I know I shoot with more precision using a scope than with iron sights - period.
bigvarmnt - Try a scope on that 44 Mag and see if it makes a difference. It does not have to be a powerful one, even a 2.5X can make a difference. I will not make a shooter out of a non shooter, but it will let you know if it is the sights/eyes or the gun - no guess work.
Good Shooting and Good Luck