Posted by JohnF on 22/10/2014 23:03:21:
Yes Graham a rare piece indeed and a delight to see.
Personally I reckon the CCH is genuine, I've seen.a lot over the last 40 years and had quite a lot of guns re-hardened. The pattern is unpredictable and depends on many factors. One of the best outfits still operating is in Birmingham and their work is superb.
Hacksaw, rifling is done in several ways, cut rifling, as its name suggests is cut by pulling a cutter through the tube, a bit more to than just that but it would require a long explanation. Then there is button rifling, done by pulling a carbide button through the tube. Lastly there is hammer forging, a process done cold on a blank the barrel comes out finished and chambered for the desired calibre. A very impressive process, incidentally some makers use this for shotgun barrels as well.
John is that ray st ledger you speak of ? I believe he is one of the best in the world at cch, turnbull in america is supposed to be fantastic too. I have been told cch is not a trade or a science , but a sort of black magic. Some of the old gunsmiths had recipies of hardening compound that they would get good results with and would never reveal to anyone else.
Maybe the magazine would do an article on case hardening , its an interesting subject, and its now more difficult to achieve seeing as kasenit is no longer available. One chap on an american forum recommends aquarium charcoal to me , anyone have any experience using this for hardening ?