I signed up for the forum, but apparently do not have immediate access to the exchange forum.
I takes some time to get EE access.
I obtained the sight from Paul Reibin, Range Sports Unlimited, in BC, so I would not be surprised if this is not one from this batch. I do not recall any markings on the sight, will have a look. I made up a .45-70 on a Ruger No. 1 with a Ron Smith barrel. Project has been on the back burner for years, have it ready for test firing this season.
I picked up a PH No 5, a Rawson, AND a central No 4 sight for nothing last week!!!!!! The elderly rifle club member said they were "just old junk" lying around, and were in an ancient modified first aid kit that had been turned into a shooting box, complete with drilled out cross brace that accepts 12 303 cartridges. Obviously 2 sighters, and 10 scoring shots. Also included were old tins full of accessories, swivels, mounting screws, a 1958 scoring and rule book(!) a rim guage, cleaning brushes and jags etc etc.
He refused to accept any money for any of it, so I'm very carefully cleaning everything up, and an soaking all the range sights in penetrating oil before cleaning them up. They all work perfectly by the way, but have not seen oil for over 50 years. He said it would have been tossed out as rubbish soon any way, so it was an amazing coincidence that I happened to drop in when I did. Makes you wonder how much quality gear is thrown out when there are deceased estates or spring cleans.
In case your wondering, I'll put the Central sight on my Lithgow, and the PH on a BSA just to keep things in perspective. Wouldn't want to upset any sensitive poms would I....
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Where was your tool and die maker located? The fellow I knew who made them up for various rifles, made his own cutter to do the mounting base grooves.
“There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”
Edward Bernays, 1928
Much changes, much remains the same.
I made my cutter by grinding three of the four flutes off a 3/8 x 16tpi tap and running the tap with the one remaining flute in the milling machine as a side cutter. I also back-cut the trailing edge of the remaining flute.
Seems to work just fine taking light cuts.
Last edited by Bluenoser; 10-15-2018 at 04:40 PM.