Trvlngnrs Posted July 17, 2011 Share Posted July 17, 2011 Hi everyone, I just ordered a .40 M&P. I'd like to use the Storm Lake 9mm conversion barrel. Should I decrease the weight of the recoil spring in order to shoot the cheaper Wal Mart ammo? What weight spring is suggested? Thanks, Trvlngnrs Link to comment Share on other sites More sharing options...
horseman Posted July 18, 2011 Share Posted July 18, 2011 I didn't change the spring. Just shoot mine with the factory recoil spring and everything else. Ran Tula and Federal 9's like a champ. Barrel out barrel in and you have a nine. Darndest thing. Link to comment Share on other sites More sharing options...
Trvlngnrs Posted July 18, 2011 Author Share Posted July 18, 2011 Great, thanks Horseman. Appreciate the info. Trvlngnrs Link to comment Share on other sites More sharing options...
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