I remember the hype launch of the Ox spring. For months in advance Airgun World just carried the wording 'ITS COMING'. By the time 'it' arrived (the Ox) everyone wanted one wether you needed one or not. [/QUOTE]

Good exercise in marketing then. How much did the makers of Ox pay the mags I wonder?

The best results I've seen with one of these springs is when a couple of coils have been cut off. Put one in a rifle and took 3 coils off and put a spacer behind the piston to take up the slack. Proper lube job and the rifle run quite sweetly. Wasn't harsh at all. Stayed within the legal limit too.