I'm considering 124gr Federal HST +p 9mm rounds for my G19 however I was curious if the 4" barrel will affect the performance of the round?
I'm considering 124gr Federal HST +p 9mm rounds for my G19 however I was curious if the 4" barrel will affect the performance of the round?
Almost all 9 mm and .40 S&W loads are designed around 4" barrels--going up or down a half-inch in barrel length (ie. 3.5-4.5" barrels) will have negligible effects on terminal performance.
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