What is the velocity gain (fps) per inch of increased

O’Gary
[subject]
Wednesday, August 28, 2019, 17:16 (2558 days ago)

barrel length? ~30 fps.

USUALLY 35 TO 45 FPS PER INCH

Gary Reeder
[subject]
Wednesday, August 28, 2019, 17:29 (2558 days ago) @ O’Gary

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