Then all that is necessary is to drive the reamer from the barrel, resharpened, and sweat the reamer to
the pull rod.
Once you have the centers in the drill rod, you will need to drill the end of the drill rod that you centered
with 3/8-inch center drill to 1/4 inch by 3/4 inch deep.
You will need to drill the hole first with a next smaller drill size. Then clean it up with a 1/4 inch drill. Now
do the second one and the drill rod is ready for rough turning.
Center up the drill rod between centers on the lathe, with the counter bored end next to the tail stock,
with a small lathe dog holding the other end. The .312 drill rod is just about the right size for the
.308-fluted end, so it will not need to have anything done to it.
The other end where the pull rod is attached will have will have to be turned. The drilled hole will
measure .293 in the rifle barrel, so you will end up with a .290 pilot on the reamer. Turn the pilot (the end
where the pull rod is attached) to about .010 larger than the finish size, and the recessed area between
the pilot and where the reamer flutes start at about .280.
The pilot area will be on most of the reamers about 1-1/4 inches long, the recess will be about 1/2 inch
long. If you make the reamers for smaller calibers, they can be made shorter.