"Gunner Asch" wrote in
message
...
On Fri, 30 Dec 2005 03:14:56 GMT, "Tom Gardner"
wrote:

So far, everybody else has offered brute-force
sollutions. I'll bet this is
faster and easier. Center punch the center,
draw a circle 7/64" smaller
than the finished hole, prick marks on this
circle 1/8" apart, use an air
drill and 1/8" stub bits and drill these holes,
knock-out the slug, clean-up
with a tapered reamer, finish with a sized
reamer.

If you are really careful, a .243 winchester
will make a nice
.308-315 hole in a frame. Might have to grind
off a little crater wall

Quick too!