Turn the thread end down to 1.100 now. Using a dial indicator as you are turning cut a .625 long
shoulder. When you have the thread shank turned to the correct size, take a small square end tool and
relieve the threads on the front end of the shoulder, and the back end of the thread shank. This relief
should be about .060 deep per side.
It is time to cut the threads on the 98 Mauser. The 98 has 12 threads per inch V type. Set up a V tool
bit ground right for threading. This is a 60-degree tool. Set the point of the tool right on center, using
the center on the tail stock. The Compound should be set at 30 degrees, when you clamp the tool. Set
the quick change gears for 12 threads per inch, make sure your feeding dial is engaged, and you are
ready to cut the threads.
Set both dials to where the tool is just touching the shank. Set the dials on 000. Set the tool in so you
will take a .005 cut. See chart for amount that you will have to turn in to get the proper depth. Have the
lathe in back gear, running it at the slowest speed. When the threading dial comes around to 0 engage
the feed. It feeds fast, so be ready to disengage the feed and back out the tool in one operation.
When it has completed set the tool in .010 and when the dial comes back to 0, engage the feed. Keep
repeating the process until you have gone .062; make a clean up pass at the last setting. Use a good
cutting oil when cutting threads. Always turn in the compound dial, leave the other at 0, and back this
out each time.
FITTING THE BARREL TO THE ACTION
Take the action and see if it will screw on to the barrel. It should but if it doesn't take another pass until
it does. DO NOT TURN ON THE LATHE OR CHANGE ANYTHING UNTIL THE ACTION WILL SCREW
ON. The barrel screws on to the action and butts up against the shoulder on the inside of the action.