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Old January 9, 2019, 06:24 PM   #22
TX Nimrod
Senior Member
Join Date: November 27, 2009
Location: Valley of the Sun
Posts: 121
The vast majority of the velocity is gained in the first 8" of barrel. For anything past that you gaining very little.
This is quite true....and very untrue. I first noticed this 20 years ago with my Marlin M45 and my 1911. With mild loads the velocity increase was small, but with some high performance +P loads the differences approached 200 fps.
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