On Wednesday, September 11, 2013 8:04:14 PM UTC-4, John B. wrote:


Originally rifling was cut rather then impressed. See

http://orro.net/2011/02/08/rifling-machine/

and

http://www.youtube.com/watch?v=kvnKSfDUCWY

for sine bar rifling machinery.

see

http://www.border-barrels.com/articles/bmart.htm

for a rather comprehensive description of, essentially, how to make a

gun barrel.



John,

Very nice links, I'll have time to study them more later today.

Thank you.

--

PaulS