ignantmike Posted April 11, 2013 Share Posted April 11, 2013 I have an m&p 9FS made in '08.....could you tell me what twist rate I have?.....I know that factory 115gr shoots good out of it...better than my g19.....thank's Quote Link to comment Share on other sites More sharing options...
fltbed Posted April 14, 2013 Share Posted April 14, 2013 S&W standard 9mm barrel twist rate was 1-18.75” or 1-16“, (depending on who you talk to.) Five grove, cut rifling, right hand twist, is still the standard I believe for all S&W barrels. I understand on the post 2010 9mm M&P barrels they’ve switched to a 1-24” to try and get better accuracy with 115-124 gr. bullets. Jeff Quote Link to comment Share on other sites More sharing options...
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