Diopter effect with aperture sight on barrel??

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Potashminer

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At my age, loosing (or have lost) the ability to see that top edge of rear sight plus the top of the front sight. I seem to do okay with aperture sights mounted on rear of receiver - like on a Win 94, a Ruger 10/22, the original battle sights on P14, M1917, Lee Enfield No. 4 - learned to get the front sight sharply in focus while looking through the fuzzy rear "peep" and trust that the physics has that front sight in dead centre of the "peep". Groups on paper move as the rear sight is adjusted, so it must be working.

I discovered that Williams makes a direct replacement rear sight for the Swede 1896 / M38. Apparently remove the rear sight axle pin, remove military sight, install their WM-96 sight and replace the axle pin. Results in an aperture sight where the flat top military rear sight used to be.

I have no experience with this idea. Would appreciate any comments about such a set up - essentially a rear "peep" but about 12" in front of your eye. Do you still experience that "diopter" effect, and focus solely on the front sight?
 
Potashminer: A Krag I used to own had, as original, a rear sight with a built in aperture that could be rotated up for use. I found it worked very well for my aging eyeballs and, to my recollection, it felt like using a normal further rearward mounted aperture. I believe the M1903 Springfields had a similar aperture available on the rear sight.

milsurpo
 
Last year I "speriminted" a bit with "home built" aperture sight for a Marlin Cowboy mounted further forward than the traditional tang sight (Marbles model) and found that the further forward you mount a sight the larger the aperture needs to be for target identification...much larger in my experience. Using an ordinary sized aperture mounted to the forward scope mount location on the top of the frame, the front sight basically filled the available circle.
 
Thanks, fingers284 - was just setting about to temporarily place a Williams aperture sight on the existing 1896 rear sight to try that - seems the little insert is for much younger eyes - hoping that by removing it and using the housing as a "ghost ring" that it might work for me.
 
Use a dab of contact cement to glue a washer on the back of the existing rear sight. That will give you an big aperture to look through.

My old eyes will work with a peep sight, but not open sights.
 
Haven't had it out in years put I think my Type 99 Arisaka has a forward mounted aperture sight. I shot some good groups with cast bullets at that time. Should get the old battle rifle out this summer. All in all I remember it to be a well made rifle that handled well. Mine is an early model if I read the markings correctly.
 
Rear mounted peep adds considerable sight radius, allows eye to quickly(and accurately) find center(eye does this instinctively, let peep blur).
Hunters need a larger aperture for dawn and dusk light conditions.
 
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