Yea eye sights vary a lot. I'm like 20/400 in my left eye. I'm left eye dominate too. I see things about 20% larger with my left eye than my right eye. I never had that problem until after I had open heart surgery. Every since that operation my eye sight went to [beeep].
Even with new eye glasses my eyes are still a problem.
My old hunting buddy had really good eye sight when we were younger. He would always see the ducks before anyone else did. He would say get down here come some ducks and I would be looking around thinking to myself WHERE? lol. And that was when I was only 20 years old.
If you wear eye glasses or contacts or have vision problems then that could be part of the reason why it's harder to see to shoot good groups.
I've shot groups at 100 yards at the shooting range that were under 1/2 in size with my Remington Model 660 222 cal rifle. And I shot my neighbors AR15 with my Nikon Scope mounted on it with 7/8" groups.
My own AR 15 shoots under 1" moa all day long at 100 yards.
If I take my time and have a good solid bench rest and shooting bag then I can control my breathing and shoot pretty good. But I still have trouble seeing the target at times due to a blurry vision problem. I think it's the Blood Pressure Medicine that I take that causes my vision to get blurry at times.
Having more light coming though the scope helps I guess. A larger front object with better glass will pass more light though the scope to the eye.
And then there is the parallax problem with some rifle scopes. Some scopes are only setup to be parallax free at 100 yards. Some more expensive rifle scopes let you adjust the reticle for parallax at different ranges.
Lots of things can affect your shooting. Rifles, Scopes, eye sight, Weather and wind, bullet type etc. There are a lot of variable to try to control.
But the one we often forget about is the most important one of all IMHO. Our eyes.
Originally Posted By: Evil_LurkerIt could be your eyesight. I found I could shoot a 100 yard group just over an inch with mine, provided that I keep the intensity turned down so it's not blooming.
I've got 20/10 eyesight (with glasses) though, so maybe that has something to do with it.
If you're wanting to shoot past about 150 yards, though, it's not the best solution.
Sorry to hear you had that bad experience.