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I believe that’s a Davis lock. No different the a Roller.
I told Rod (I understand about cost) that I don’t know why someone doesn’t copy a British Best lock.
Note the diameter of the tumbler and sear engagement angle.
This was copied from an original Whitworth Target Rifle. (You’ll have to CB your plug). Saw nearly same (no stakes) on a Watson d/b that I replaced. Looked as if someone tried the dig it out.
Excuse my sketches..
Plug with soft material plug -flush with bottom of CB.
Counterbore 0.050” +/-
Displace CB under the edge (Make tool)
Stake up points to embed into PT
Swage PT plug (thicker than CB)
Peen displaced metal down, if needed
File flat
Could of sworn when Rod came to my home to look at some originals ( soon after he bought Don’s stuff) he told me he was planning on using Davis locks. Oh well, I’ll see him in a few weeks as I told him when we pulled locks out - note the geometry, especially the tumbler and sear engagement.
PT - I find 99.9% pure PT to be very soft compared to 95/5%. I’ve never worked with gold.
You should end up with this.
View attachment 5124
After reading one of westbj2's posts I took a closer look at the nipple seating.
Curtis
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