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04-04-2017, 01:19 PM
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Join Date: Dec 2016
Location: Denmark
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Here is some calculated numbers using Quickload:
Bullet: Hornady 124gr FMJ RN Powder: Unique 5.0grains Calulated max pressure: 31.5kpsi with full burn in a 4" barrel. 4" barrel: 1141fps 5" barrel: 1196fps 6" barrel: 1238fps 7" barrel: 1270fps 8" barrel: 1296fps So it seems that there are indeed more power in a 9mm from a longer barrel. As you can see the gain for each inch is decreasing. |
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