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A Sighting Problem

Posted: Thu Jun 20, 2013 7:23 am
by Aughnanure
I had a problem with my BSA Mk III .22 in that when I got an original rere sight I found that I would either have to gouge a bit out of the stock or alter the foresight so that I could shoot comfortably, the photos show the test rig to get the correct foresight height.

Crude but effective.

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I'll start on the metal foresight tomorrow and will update as I go (hopefully).

Re: A Sighting Problem

Posted: Thu Jun 20, 2013 2:50 pm
by DuncaninFrance
That's interesting Eoin,

Re: A Sighting Problem

Posted: Sat Jun 22, 2013 3:33 am
by Aughnanure
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The piece of scrap and the sight block, rough machined and just put there to show where it came from.
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The barrel hole bored, note balance weight !!
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Drilling the sight hole.
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Sight hole bored and the sight holder slides in nicely.
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Front view, the cut to allow cramping had to be done by hacksaw, unfortunately.
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More to be done but there is a range shoot tomorrow, so more next week; such as rounding the corners to radii that complement both holes, a slight taper to the body and a proper cramping screw and moving it back over the foresight base..

Re: A Sighting Problem

Posted: Sat Jun 22, 2013 1:30 pm
by dhtaxi
Nice job. I need a lathe I keep dropping hints to her indoors. With a bit of luck before the year end I will convince her. Every time I bring the subject up her stock answer is how much is a lathe OK and how much is a holiday. So lets go on holiday. Women.

Re: A Sighting Problem

Posted: Sat Jun 22, 2013 10:30 pm
by M14man
You do realize that if your rifle was sighted in before, you will now have to move the rear sight that much higher also.
I am wondering if you will have enough elevation in the knob to do this.

Re: A Sighting Problem

Posted: Sat Jun 22, 2013 11:39 pm
by Aughnanure
I sighted it in using the wooden arrangement and measured from the top barrel surface to the underside of the sight holder and made the new sight base/frame to suit, tried it on the range today and after a few clicks was on for elevation at 50 yards.

All that remains is to tidy it up and spray black.