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Old September 11, 2012, 04:28 PM   #3
Walt Sherrill
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Join Date: February 15, 1999
Location: Winston-Salem, NC USA
Posts: 6,348
The factory weight for a 9mm is 17 lbs., and for a .40, it's 20 lbs.

Unless you're having cycling problems with lighter loads - such as the gun not feeding or extracting properly with lighter rounds -- there's really no reason to go to a lighter recoil spring. A lighter spring will make it easier to rack the slide, but you probably won't notice a lot of difference, otherwise.

Wolff has a lot of options, including some variable-rate springs. www.gunsprings.com

Last edited by Walt Sherrill; September 11, 2012 at 04:38 PM.
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