....There is no magic in coil springs as compared to V springs. I'll venture that there was a lot more "cut and try" in V spring design than engineering. Coil springs, on the other hand, have tended to be carefully designed, made in factories with tight quality control, and carefully developed standards....
I suspect coil springs might have tight quality controls, but many of them seem to be prone to mass production quality issues probably to meet some price point. While not good gun v springs, there're still many applications for leaf springs that're likely just as engineered.
While not mass production, I thought of the posting that showed the Purdy v spring, seemingly being made on a small production basis, rather than one off hand made. Only an observation is all Rocketman.
