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Brian Enos's Forums... Maku mozo!

Open spring rate for M&P major 9mm


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My pet project is a gen 1 core . KKM 5.5 threaded barrel with a 11 port SJC COMP. Frame mounted C-more. 


And 8.8grs of 3n38 shot a PD 124gr JHP pretty flat and dot tracked straight . I do want to try 9.0 and 9.2 but stuck waiting on more PD back ordered 124gr jhp. 


I'm using a glock 13lb spring now and I'm wondering if I can go lower or how low can I go?


The load has no pressure signs. 

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