Has anyone fitted non standard springs to the 124/127 to get a better fit and shot cycle than the OE spring ?

Currently have a 124 in bits and looking to try a different spring. The one that came out of mine is non OE at 290 long, 3.1 wire, 14.5 id and 20.8 od. I feel thats a bit long for that spec though it shot very well.

Thanks Rob