The problem with seeing rear IRON sights on rifles, particularly as we age- is usually based on the fact that the sight "NOTCH" is too small!
I leave the rear sight back, to get the best sight radius. But, I open the rear sight up wider, so I can see plenty of daylight on both sides of the front sight post, or around the bead front sight. I just bought a used rifle made almost 50 years ago. Its a modern suppository gun, but I have wanted one of these since I was a kid, and the price on this one was so low I could not let it get past me. But, the prior owner(s) had scope on it, but took it off when the gun was sold. The iron sights have not been used for years, as was evident from the amount of congealed oil or grease and dust I found in, under, and around the rear sight. The rear sight is typically small, and works great in good daylight shooting at paper targets with big black bullseyes. For anything else-- not so good.
:shocked2:
Its on my "to-do" list this winter to open up that notch with my dremel tool.
Age has made the size of the rear sight notch an issue in almost every gun I shoot. But, rather than doing all that dove-tailing and making fillers every couple of years, I would rather widen the notch. Years ago, when my eyesight became an issue, I first began removing the apertures altogether from the peep sights I had on some rifles. Today, you pay BIG MONEY for a "GHOST RING" sight that does the same thing! :shocked2: :blah: :grin: :hatsoff:
As is obvious, other opinions vary. :surrender: