Jacket Maker Kit, Penny 308
Quantity in Basket:
Catalog No.: JMK-P-H
Shipping Weight: 8.00 pounds
This special set of dies will turn copper alloy pennies
made before 1962 into 1.15 inch long .308 caliber bullet
jackets. You can also add optional draw and trim dies to
make good 7mm (284) or .270 (6.7mm) jackets.
Except during 1943, when pennies were made from steel to
preserve copper for the war effort, and up until 1963, pennies
were predominantly made from 95% copper and 5% zinc (gilding metal alloy),
except for some experiments with bronze (95% copper with a
5% mix of tin and zinc) during the period from 1864 to 1942,
and again from 1946 to 1962.
During 1963, a transition was made to predominantly zinc
with a small amount of copper, and then to a zinc core with
a copper/zinc laminate on the surface. These later pennies
are not suitable for making jackets. They crumble and crack
and may cause damage to the dies.
The pennies made prior to 1963, with the 1943 exception,
need to be heated to a dull red color to anneal them,
and then they can be drawn. Some of the bronze alloys
may or may not draw as well as the gilding metal alloys.
However, the quality of jacket that can be made is quite
decent. The stamped pattern on the penny is virtually
invisible by the first draw.
This set consists of a cupping die and a series of draw
dies with stripper plates and guides, and a trim die to
adjust the length, plus an additional 7mm draw die that
is not normally included with the 30 caliber set.
It can be operated in the CSP-2 Mega Mite press with the
long handle option, but is easier to use in the CHP-1
Hydro-Press. The drawback of this system is that modern
pennies are not suitable, and only the pre-1963 pennies
have the proper composition for making jackets. However,
there are millions of such pennies in circulation. Except
for the very old or limited runs, most of them are still
available for face value. Paying 1 cent for a .308 or
.284 jacket is a huge bargain. It is possible that copper
coins from other countries might be used, but this has not
To determine if the coin will work, it first must fit the
cupping die. If it is the same diameter as a US penny,
the next test is whether it can be annealed. Heat it to
at least 1,200 degrees F. If it melts, it isn't copper.
If it turns silver, it isn't copper. If it glows red
and then when cool is a dull bronze color, it probably is
a suitable copper alloy.
Do not attempt to form jackets or cups without first
annealing the penny! It won't work, and it may cause