🚀 go-pugleaf

In article <9301261959.AA24576@appserv.Eng.Sun.COM> fiddler@concertina.Eng.Sun.COM (steve hix) writes:
#The fluted barrel would be x% stiffer than an unfluted barrel of about
#the same weight.  The stiffness of a barrel (or other cylinder) increases
#faster than the diameter increase.  I used to know the function for
#stiffness increase back when I was trying to decide between a skinny-tube
#steel-frame bicycle and a fat-tube aluminum frame.

Stiffness of a cylinder increases as the fourth power of diameter
(twice the diameter, sixteen times the stiffness, check out a
benchrest rifle) and decreases as the third power of length.

#Fatter is better.

Fatter is stiffer, and stiffer is better if the action can hold the
weight of the barrel without bending (don't try this with a factory
bolt action, especially one with a magazine cutout, or any single
shot action).  That's why BR rifles have sleeved factory actions,
or custom actions of large diameter with minimum loading port.
On big rifles, barrel blocks can be used to prevent action bending
and rduce the effective length of the barrel (increases stiffness).
Typical barrel diameter for 1000 yard BR is 1.350".

Toby Bradshaw
Department of Biochemistry and College of Forest Resources
University of Washington, Seattle
toby@u.washington.edu

"A well-educated electorate being necessary to the prosperity of
a free state, the right of the people to keep and read books, shall
not be infringed."  Do you think that banning legal possession of
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