I don't know if I would say the rear sight is too far back. It depends on your eyes and stance as much as anything. When I was younger, I wanted all rear sights back as far as possible.

But supposing you find it is too far back at some point, such as when you hit the midcentury mark and your eyes start sliding downhill, then you may want to replace your folding V sight with a large ring aperture. It would be easy to do so and would give you a very sharp sight picture and the longer sight radius. Remington used to make such a sight a century ago. Reinventing something like it, would be very usable on this rifle.

Brent

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BrentD, (Professor - just for Stan)
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