Very nice work- a boxlock- 12 gauge? Possibly similar to the first top lever and leaf spring Parker used, later the Hayes re-design (after I think 1906?) with the cam linkage to the bolt and the coil spring in a housing-
Did you do a before and after Hardness test- drawn and hardened 6150 steel for such springs- maybe C scale 48-52-- tempering is crucial- what temperature in the kiln, and for how long, and also the drawn down time??
Looks good for another 100 years of service- I usually do a vice compression-extension test on replacement springs, not foolproof, just a "benchmark"- Thanks for sharing and the good fotos too!!!
