Originally Posted by
Lakey
The two springs were wound in opposite directions, so it reduced the torque of the spring during compression & firing. Also, apparently the shorter springs were easier to temper at the factory. Both these things resulted in less breakages once the springs had been installed. I think guns with the twin springs fitted, shoot better and more smoothly than the single spring guns.Especially in the long cylinder 45 inch size. Modern replacement pairs are often encountered in thicker wire than the originals. These modern springs aren't as nice to fire as the flat section originals IMO.
Lakey