<<<My real problem is my right eye has gone bad on me. I have a retina issue that will not let me focus very well on sights, or anything else for that matter.
So when I am zeroing in a rifle I don't know if it's my eye, or the gun???>>>
I have found 40 Gr 3F Swiss to be a good load, in my 36.
I have also found, at the ripe old age of 75, I cannot see the front sight if the rear sight is a deep slot. I can see the front sight much better if the rear sight is a shallow, V notch. I also bought a rear sight with an aperture I plan to try.
<<<Getting old is not for sissys!!>>>
I hear ya, there. I'm in relatively good health, but I certainly can feel the effects of the years of wear and tear on my body. My wife recently commented that I am a tough old bird, 'cause I do my best to keep "the old man" at bay. LOL
John