Well, guys. I'm good for dies and molds, looks like. Will dig out Seyfried's article. As to making springs, my attrmpts have been 'non-commercial', to say the least. Having a real metal smith do the job is the best insurance of money well spent.
As to getting into the gunpile and 'fixin', there is a darn good riflesmith down in Friendship, Indiana whose Dad was a prominent longrifle guy. They can do about anything, and reasonably. Mebbe one of the regulars here will pop his name, as I know he re-did a 28ga Uggie40 for someone years ago, including rehardening of springs and sears, tuning, and recutting better engraving. It was a real success.
Now...all we need to do is set up a flint-spaller in the US, who for a cheaper domestic price, can turn out rocks that last twenty shots and never need the edge tuned -- to get that instantaneous click-bang. Slippery slope indeed!!
Happy powder smoke, of whatever flavor, and signing off for a while.