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Not my photos.

They are from this discussion at the Double Gun BBS

https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=117029

Note the modified sear engagement.
That's the "only way" to do this, in my opinion.
Going with the standard flat sear engagement allows the cocking piece to move side to side at engagement, leaving you with excessive windage error.

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Many thanks for these pictures, Tinker.

I agree, that sear modification will definitely keep the sight on center. The side play in the cocking piece seems to vary according to the rifle, I've found. I made up a test fixture on one of mine and found it centered on the same spot each time. Good enough for a bolt-mounted ring sight, anyway. It certainly allows for an excellent sight radius.

Thanks also, TexasJohn. Yours is the only good example of the Lyman set-up I've seen so far.

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