After reading the article about the Wilson/scattergun shotgun,I thought I might want to install a Stainless Steel Magazine spring in MY Winchester 1300 defender like they have in their Rem. 870's.I called them up,and unfortunatly they only make them for a 5 and 6 shot tubes.Mine is a seven shot tube.Does anybody know where I might find a source?Wolfe springs website has some springs,but does not mention anywhere on their website as to the material they are made of.Thanks,Ralph