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Muzzle Velocity

This is a discussion on Muzzle Velocity within the Ruger Bolt Action forums, part of the Rifle & Shotgun Forum category; I've been looking at the M77 RSI rifles. Very handsome gun. Anyway, I was wondering what kind of change in muzzle velocity it would produce ...


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Old January 31st, 2010, 10:50 AM   #1
 
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Question Muzzle Velocity

I've been looking at the M77 RSI rifles. Very handsome gun. Anyway, I was wondering what kind of change in muzzle velocity it would produce from its 18.5" barrel vs. the more common 24" barrel.

Would it be proportional to the length? Example, say ammo says MV = 3,000'/sec. Then, would the ESTIMATED muzzle velocity be 3,000 * 18.5 / 24 = 2,312'/sec.?

Or, would it be something like that rule of thumb of 25'/sec./" of barrel?



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Old January 31st, 2010, 12:56 PM   #2
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RIFLE BARREL
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Old January 31st, 2010, 01:41 PM   #3
 
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Perfect. Thank you!
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Old February 1st, 2010, 01:32 PM   #4
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Tater, on average you can figure from 30 to 38 fps difference for every inch in length.
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