If you have kept a sharp tool and a light feed, it should be straight. You must, after ever pass from now
on the barrel should be checked to see if it is straight. If the barrel has warped, take a lighter pass after
it is straighten.
When you start cutting the contour of the shoulder, unless you have a tracer attachment for your lathe,
you will have to cut it by hand. This may sound hard, but with a little practice, you will get a perfect
contour. To this, as you get where the contour starts, you will start to back the feed out by hand. With
pass put a little more contour to the shoulder.
Remember to take shoulder back a little farther than where it should be when finish, as you have to turn
down the shank of the barrel. If the barrel should start to chatter when turning, lay a barrel blank on the
barrel behind the cutter and that will usually stop the chatter.
When you have finish turning the barrel down to within a few thousands of the finish size, set the feed to
the lightest feed. Sharpen the tool bit, hone it very good, and make a finish pass.