Have you considered purchasing rifled barrel liner blanks ?
I do not remember the current best source, but the process is as
follows. - The barrel liner is as I rember 5/16 dia. for 22 cal.
Drill put the barrel proper and epoxy the barrel reliner into it.
Then all you need do is chamber it.
You might find a old barrel which can be cut down and rechambered for
a new barrel.
Have fun and wear eye protection.
ROBB.
--- In 7x12minilathe@..., Brian Pitt <bfp@...> wrote:
On Wednesday 11 April 2007 15:00, taurokm3 wrote:
The material is 4140 Steel, and it will go in the chuck, it would
go
through the spindle, but I have no way to clamp it to the face
plate.
This is going to be a gun barrel. It is .770" diameter and 8
inches long (total), with a tip that is 1" x .950" I am thinking
of
building some v notched clamps out of aluminum that would bolt to
the
faceplate, with notches for the bolts so I can center the stock.
It
has been suggested that I weld a standard bit to a length of
drill rod
with a V and use that, I just don't know what kind of hole that
would
give me.
Thanks
Doug
a v-block or barrel vise clamped to the faceplate should work but
a standard twist drill wont cut straight for more than an inch
I've used half round drills silver soldered to an extension shank
and many many many pecks ,the shank was regular 1018 but drill rod
or "piano wire"
from the hobby shop would be better ,you can find half round drills
here
grind the shank to a 60deg point and silver solder it into a center
drilled socket on
the extension that gives more surface area to hold them together
a couple notes
you don't want to drill it to .218 right off ,drill it to maybe
3/16" then ream it up
to size in several steps something like rough ,semi-finish then
finish size
or just under finish size then lap the last half thou
if you want it to finish to 8" long you'll probably want to start
with a 10-12" blank
the ends will bellmouth on you when you ream and rifle it
for a couple really good books on barrel drilling and gunsmithing
download this cd
its got about everything you'll need
Brian
--
"Nemo me impune lacesset"
