If you are careful, the case can be removed also. All that is left to do is cut the extractor slot, and crown
the barrel. This can be done by very carefully filling the liner flush with the muzzle, and then removing any
burrs from the edge of the bore with a sharp knife.
TURNING LINERS
To prepare a barrel that you drilled, reamed, and rifled, for insertion into a bored barrel it must be turned
to size.
The first thing to do is cut the barrel to the length that you nee plus 1 inch for cleaning up. You will need
the extra 1-inch in truing up each end, and the final finishing of the barrel.
You have the barrel cut to the correct length, so now chuck the barrel in the lathe and face off both ends
of the barrel. If the bore has run quite a bit off center, you will need to repeat this process after a few
passes on the O.D.
The reason for this is that if the angle on the end of the barrel is off, one side of the barrel will be thicker
than the other. In turning, the barrel will probably warp. Now that the barrel is squared, put the faceplate
on the lathe. Take a bar of steel that is 20 inches long that has centers in each end and has been turned
true.
You will need to set the tail stock to an exact 0000 setting so that there is no taper in the OD of the liner
when finished. Set the dial indicator on the carriage of the lathe, set it to 000, and set the tail stock over
a bit. Crank the carriage down towards the head stock to where the mark is on the barrel. Check the
reading on the dial indicator, and if it is not right, reset the tail stock and repeat the process until you get
0.0104.
Having now completed setting the tail stock to 0000, set the barrel blank between the centers, and
clamp a lathe dog on the head stock end. The tail stock center, I have found over the years work better if
it is carbide. If you are careful, you can use the standard high-speed center. Put a little grease on it that
contains MolyKote Z before setting it up.
I have tried to use live centers off and on, but I have found that I get to much chatter, and that will cause