Quote Originally Posted by ggggr View Post
CapitalBee sent me a spring to try in a Webley Junior pistol.. It was easy to cock but was down in power, and after 15 shots when I checked it had shortened a lot. I've been told that airgun springs are over stressed compared to most springs---and I wonder if this spring could be retempered or is it down to the quality of the wire?
I'm quite happy with the normal springs for the pistol and as I only tend to have the over on on Christmas Day and New Years Day, cannot see my throwing it in the over for quite a while!
Guy, If a spring shortens after compression then this is down to the fact that it has been tempered too soft (that is, it has been tempered at too high a temperature.) As long as the spring has no obvious cracks or other defects, it could be completely softened and returned to its original length, then completely hardened to almost glass brittleness, and then tempered back to a proper spring flexibility.

Cheers,
John