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Old January 8, 2019, 01:23 PM   #15
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Join Date: October 22, 2016
Posts: 2,462
The 8.5" BBL gets the 155 grn HST up to 1360fps. From what I understand the 9mm is very similar, past 8.5" velocity gains are SLOW.
6 or 8 inches longer of barrel for 20 to 40 fps more is not worth the added length to the gun or decreased rigidity.

The only rimless pistol ammo that this doesn't apply to are .357 Sig and 10mm. Velocity gains from 8 to 10 inches up to 16 inches is a bit more, around 60 to 90 fps more.
Any good revolver > Any good semi auto
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