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April - May 2003 Volume 38, Number
2 ISSN: 0017-7393 Number 222 |
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On the
cover... The Thompson/Center Encore .357 Maximum features a 15-inch Hi-Luster blue barrel with "Muzzle Tamer" and 2.5-7x T/C scope set in Duo-ring mounts. Photo by Stan Trzoniec. |
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What if I were to tell you there was
a kind of cast bullet, a lead alloy bullet, that was not only equal but also superior to
any handgun and most any low-velocity rifle bullet on earth? Yes, superior to any ordinary
jacketed bullet, superior to the
highest-tech bonded, partitioned or any other. They offer splendid accuracy, extreme
expansion and penetration that can only be exceeded by the best solids. Many would answer
that it sounds like the boy has been too close to the juniper smoke, but it is true.
The concept is extremely simple. We
begin with almost any shape or design of cast bullet and make it with two different metal
hardnesses. Cast softnose bullets reach perfection in handguns or in rifles with
velocities below 2,000 fps. They can be used in high-velocity rifle cartridges, but they
are subject to the limitations of any cast bullet in fast rifles. Further, while there are
no perfect jacketed bullets for hunting handguns and slow big-bore rifles, there certainly
are perfect jacketed bullets for high-velocity rifles. So, in general, when we use this
technology, it will be in arms that run below 2,000 fps.
I remember well the first shot I
fired in anger with one of these bullets. I was working in Zambia at the time,
carrying a .45 Colt. LBT bullets were an unknown thing to me. I was still trying to get
the most out of the Keith shape and looking for others that would be better. The loads at
the time drove the 325-grain, Linotype (extremely hard) bullets about 1,500 fps. They were
very effective. However, due to the relatively small flat on the noses (and because
contrary to popular belief, the shoulder did no work), the bullets were just a bit short
of splash on game weighing less than 500 pounds. This shot, using the very
same mould now softnosed, was at a big boar warthog. He was moving at a fast
trot, angling away at about 40 yards. He weighed about 250 pounds. With the solids
the big bullet would smack him, and he would accelerate for about 50 yards and fold. But
this shot had an entirely different effect. Piggys lights just went out, kerwhop to
the ground, without a kick. Yes, dust flew as the bullet left his opposite front shoulder
and plowed into the hard African clay, but otherwise absolutely nothing happened. It was a
real eye-opener, for this bullet had delivered the first absolutely decisive blow I had
ever seen from a handgun. That was almost 20 years ago, and the same technology continues
to impress both this shooter and, more importantly, the targets.
Right about now most of you are
getting discouraged. Surely something this high-tech, this spectacular, is either
unreasonably expensive, impossibly difficult or another of those concepts that require a
home machine shop to duplicate. Good news! They are cheap, easy and readily done by anyone
who casts bullets.
There are several ways to create
these wonder-bullets. The most basic, and the one I use most, requires only two specialized
pieces of equipment. To begin, any conventional bullet mould is ready, willing and able to
make softnose bullets. The shape and design is not particularly important. We normally
would not choose a very pointed spitzer shape, but those are rarely used in low-velocity
arms. The bullet nose can be flat or round, with perfect success. In fact, the concept
really lends itself to improving the impact performance of roundnose and semipointed
bullets that are marginal when made of a single, relatively hard metal. Beyond the mould,
you will need a second pot to melt the soft (or less hard) lead. This can be a completely
separate heat source and/or melting pot or can be a small, secondary insert pot that lives
inside your regular melting pot. These inserts are easily made out of a piece of
thin-walled, 2-inch pipe, a bit of angle iron and a setscrew. Any welding shop can make it
for you. Perhaps the best plan is a second melting pot. Lyman has a MINI-MAG electric
furnace. This is a small (10-pound) electric pot that costs about $50 and offers the
convenience and control of a completely separate system for the soft metal. The only
additional piece of equipment needed is a mini-ladle that will meter a small amount of
soft lead into the nose portion of the mould. I make these out of two very exotic
and expensive materials - empty handgun shells and wire.
To best understand the utensils, we should
fast-forward a moment to see exactly how we make the bullets. Essentially we will pour a
chosen amount of soft pure lead (or something slightly stiffer with some tin) into the
nose of the mould. That is to say, we will pour in the soft metal first and then fill the
mould with some metal that has real backbone. This can be wheelweights that will be
heat-treated or Linotype that is perfectly hard when it cools. The pot for the soft metal
can be quite small because the soft portion of the bullet rarely exceeds one-third the
total and may be much less. The mini-ladle is used to both measure and pour the soft metal
into the mould before it is filled. Once the nose is poured in the mould, you simply fill
and finish the bullet exactly as you would any other normal cast bullet.
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Returning to the tools themselves,
if you use a second melting system, it can be small. One of the smaller, inexpensive
electric pots is fine, as is a second small pot on your gas hot plate. The one requirement
for this system is above normal casting temperature, so be sure whatever system you use to
melt both the soft and hard metal is capable of at least 700 degrees. The insert is made
by smashing closed one end of a 2 to 3 inch long piece of tubing and sealing it by welding
or brazing. A dogleg of angle iron attached to the top of the pipe and fitted with a 1/4
inch diameter setscrew is used to secure it in the big pot to keep it from floating around
or tipping over.
Empty handgun cases make ideal
ladles. I normally use .38/9mm and .45 caliber. The handle is wrapped around
the head and then twisted for 4 or 5 inches and ends in a loop of some shape that gives
your fingers control. The softnose concept thrives on the size of the ladle - on the idea
that we can dictate just how much, or little, any given bullet expands, how much weight it
retains and the sectional density of the solid that remains after expansion. Most of these
magical qualities are controlled by how much soft metal we put in the nose. This can vary
from a small tip that wipes off to create a flat point up to half the bullets
length. To make the chosen degree of softnose, you simply cut-and-try, shortening the
brass case with a grinder or file until it holds the amount of metal you want. To test
this all you have to do is pour a dipperful of metal into the mould, wait a few seconds
for it to harden and have a look. At first you will have more bullet in the
mould than you want, so nip a little off the case and pour again. A tip that applies to
these tests and the actual bullet casting is to hold the mould relatively level while you
pour in the softnose, so the lead stays level in the mould itself. When you have a dipper
of the correct size, it is time to make the real thing.
Beyond the small addition of tools,
softnose bullets are cast at higher-than-normal casting temperature. There are two reasons
for this. First the process of pouring a bullet in two parts takes more time than a normal
pour. Thus, we must have both the mould and metal hot enough to tolerate what would be
otherwise very poor bullet casting technique. With the heat the nose portion will not
solidify as it hits the sides of the mould, but will flow neatly right to the bottom and
stay molten for a second or two. Then, when we pour in the hard metal to fill the mould,
it will fuse to the softnose and fill out the cavity
perfectly.
A casting thermometer is always
handy, and it really helps with softnose bullets. Lyman has a fine one that measures from
200 to 1,000 degrees. Try 750 degrees, especially in the big pot of hard metal, with the
soft at a similar, or slightly lower, temperature. Having a hot mould is also important.
Heat the blocks in the molten metal, then, before adding the softnose, cast several normal
bullets, working until your mould yields perfection. This reduces the reject
rate of the special bullets. If you do not get good bullets, increase the metal
temperature.
There are other ways to make the
bullets. One is using a special softnose casting pot once marketed by LBT. This used a
clever bounce-system that dumped a metered amount of lead out of a bottom pour pot. I
actually doubt, unless you find a used one, we will have these again. They were expensive
to make, and the demand is low. Another fine concept perfected by LBT was a two-part
mould. The first cast the bullet nose, typically the portion of the bullet in front of the
driving surface. Once made, the softnoses were placed in the matching mould, which in turn
was filled with hard metal. This idea worked especially well with LBTs ability to
control diameters, making the nose just a few thousandths smaller than the final mould, so
it fit easily. Lyman marketed a two-part mould that cast a base and a nose that were
actually glued together cold. I have not used these, but believe they would work. With the
anticipated return of LBT to the bullet mould business, I believe we should soon see these
excellent moulds back on the market. Also, if you want to fully understand the metallurgy
of lead alloys, softnoses and heat treating, the book Jacketed Performance with Cast
Bullets by Veral Smith (HCR 62, Box 145, Moyie Springs ID 83845) is a marvelous resource.
No one who shoots or makes cast bullets should be without it.
When we make softnose cast bullets,
it is important to be just a little more forgiving about the appearance of our bullets.
This is about performance and results, not beauty contests. It is not uncommon to see a
small wrinkle or line between the soft and hard parts. It is possible to make a bullet
that looks perfect, but asking them all to be so is unreasonable. For the purposes of
accuracy and terminal results, the small flaws have absolutely no effect on the bullets.
In spite of what we imagine, the hard and soft metal fuse together, making a very strong
bond. I think the only kind of failure, of the bond between the soft and hard metal, that
would matter is one so severe the bullet would come apart in flight. When the bullets hit,
there is plenty of force causing the nose to glue itself to the base, until we want it to
come off.
With the mention of the attachment of the
softnose to the base, we begin to touch some very important concepts of expanding bullets,
all expanding bullets and especially those designed for big bores and low velocity. Lets
get right to the point: Large frontal diameters and retained weight are greatly overrated
- they are often bad things! We cannot go farther without referring to the magnificent
Nosler Partition as used in high-velocity rifles. They do two things that make them
extraordinary. First they expand easily and rapidly, but far more importantly, the frontal
area gets big and then goes back to just over bore diameter very quickly. The end result
is nothing less than a solid bullet with a flat nose that penetrates deeply at relatively
high velocity. These bullets are a type of those that can be described with the word
perfection - when they have relatively high sectional densities. The very same
design can go quite wrong if misused, misused in big bores at low velocity with short,
light bullets.
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I witnessed a very sad failure of
just such a bullet this fall. The young man made a perfect shot, hit the big cow elk
perfectly on the shoulder about one-fourth the way up from the bottom of her chest. The
bullet smacked the big shoulder knuckle and broke the bone. The hit should have been fatal
in a few steps, but we watched her move on, trailing the big herd. We left her quietly
until the rest of the elk stopped to graze and bed again, but our stalk was unsuccessful
for she climbed and mingled with the rest somewhere in the trees. When at last I forced
them to move again, we saw her once more, in the middle of the herd now, far below in the
open meadow. There was no hope, no chance for another shot, for the many-hundred elk kept
us at 500 yards or more. The bullet, a 300-grain Partition, fired from a .45-70 had
clearly been stopped by the big bone and had not entered the chest. It is a very simple
case of too short, too big, too little sectional density and much, much too little
penetration. It is a mistake I will not make again.
But to return to the moral of the
story, this bullets design tries to mimic a smallbore, by expanding a big-bore
bullet to excessive diameter. After this expansion we have a very short shank with a large
frontal area. Said another way, we have something that is likely to be wider than it is
long, with not enough horsepower to push it deeply enough to be reliable. When we choose
the softnose cast concept, we have control over two factors: the final length of the
bullet and its diameter. We can avoid the huge mistake of asking something that resembles
a quarter to penetrate, flat-side on!
The length is controlled by the
amount of soft metal. By making only the nose or part of the nose soft, we can guarantee
the bullet will retain significant sectional density after it expands. Even more important
than the length is the ability to keep the final diameter small. The softnose concept is
an absolute master of this very difficult task. Returning to the unfortunate incident with
the elk, a softnose, hopefully a heavier than 300-grain softnose, for the big .45 caliber
would have managed perfectly. Why? Because when it hit the bone, instead of growing larger
in diameter, it would have instantly shed its big expanded nose and returned to its
original .45 caliber. The remaining shank, made of rock-hard metal would now be a solid,
capable of penetrating not only the 4 inch thick bone, but also the muscles, ribs, heart
and probably all the shoulder on the far side.
How? Essentially the softnose
bullets have a safety valve. Whenever the frontal resistance becomes too great, from bone,
gristle or heavy muscle, the solid rear portion is able to actually shoot right through
its own expanded nose. The nose may fragment or even become a donut. It has done its
destruction and will now set the shank free to continue on its path through the vitals. If
only soft lung tissue it hit, it will keep some of its mushroom shape and create damage in
the conventional way.
In
addition to the balance the softnose bullets give to the relatively short, low-momentum
handgun and light big-bore rifle bullets, they can add a tremendous blow and large exit
hole to otherwise inefficient, pointy but heavy rifle bullets. By making the front part
of, say, a .45-70, 500-grain bullet of pure lead, we now have the ability to almost
instantly create a mushroom, followed by a flatnose solid, instead of a bullet that may
just slip through soft tissue.
As we look at all this potential, we
see that beyond the amount of the different metals used, their hardness will certainly
enter the equation. I favor a combination of very softnoses, pure lead or not much harder
than 1:40 tin/lead, and bases of the toughest possible metals. Tough is an active word
here. They must be as hard as possible, without being brittle, so big bones do not shatter
them. Heat-treated wheelweights are ideal, followed by Linotype. Treating the wheelweights
is easy. You simply drop the bullets, hot from the mould, into a 5-gallon bucket of cold
water. Linotype comes out of the mould perfectly, without further attention, at or very
close to the target hardness of Brinell hardness number 22.
After you cast the bullets, sizing
them needs a bit of consideration. First, if you are using pure lead, the softnose is
really soft. It will deform if you use anything but a perfectly fitting nose punch. There
is another, better way to size all cast bullets, and that is to push them into the die
nose first. This eliminates the nose deformation problem and may result in a better bullet
overall. Also, if you are heat-treating wheelweights, be sure to size them within an hour
of casting, before they harden. After they set up, it can be really tough to shove them
through the die. If they are belligerent, or if you have some already hardened bullets or
Linotype, lube the bullets with case-sizing lubricant before sizing. Then, wipe this lube
off and add your normal lubricant. With any except a Star lubricator-sizer, you will have
to run your softnose bullets through twice. Once, nose first, to size them and again base
first to fill the grooves with lube. Because of the small numbers involved, you can also
hand-lube the special ones.
There are two other concepts that go
with the softnose idea. The first is, well, backwards. It is an unusual use, but now
instead of making a softnose we make a soft base. The purpose is to make bullets that will
bump up to fill the rifling and still be rock hard solids when they hit. There are few
places that demand the technology; original .461 Gibbs rifles are one. The other is in
muzzleloaders that use long bullets. These must be about bore size to load and then have
to expand to fill the grooves on ignition. Normally these must be quite soft to work. If
you happen to want Cape-buffalo-style penetration, make the back one-fourth to one-third
of the bullet relatively soft, 1:40 to 1:20 (lead/tin) and heat-treated wheelweights for
the rest. Now the base will remain malleable and expand, while the rest will ride the bore
and only dent a little on railroad iron.
Another really beneficial
application is to use good, heavy cast bullets in sabots for muzzleloaders. Generally,
these are plagued with frangible, over-expanding pistol bullets. When you put a 325- to
360-grain cast softnose in front of 100 grains of black powder, in a muzzleloader, you
have a truly spectacular killer. They will slap little whitetail as hard as anything you
have ever fired and will be perfectly compatible with elk, big bears or moose. Yes, one
size does indeed fit all.
When we start to push a rifle or
handgun to or beyond its potential, the bullets demonstrate their full reward. An example
is a friend who wanted to use his little Purdey .450x3 1/4-inch express rifle on bison. A
big bullet for these rifles weighs 360 grains and, by most standards, is very marginal
against a ton or more of big bull buffalo. It was this very same rifle that broke
a 1:20 alloy bullet on an elk knuckle, so we were a bit apprehensive about tackling the
big bull with normal bullets. Enter the cast softnose. We made the 360-grain Gould shape
out of pure lead back to the front driving band, while the rest was heat-treated
wheelweights. The short story is the bullets, driven by 110 grains of black powder,
penetrated completely through the huge shoulders to the hide on the far side and
essentially hammered the huge bull to the ground. Not bad, not bad!
As we look at the aggravation of
making these two-part bullets, it is useful to remember we will only need a few of them.
They are pure hunting tools. Regular bullets, made in the same mould, will shoot exactly
the same as the softnose. So, all zeroing and practice is with the simple bullets. Of
course, you will want to conduct some expansion and penetration tests in wet paper before
your hunt. Keeping the labor-bill in perspective, we can all hope, with our highest hopes,
to be able to use up 40 softnose hunting bullets in the next many years! There is one
small hazard. When your hunting buddies figure out you make these jewels, they will become
exceedingly friendly. Think ahead - they must have something you want.
So often, in the land of firearms, I am forced
to tell you there is no magic, no real edge, no advantage that can be demonstrated. Here
we can shed those restrictions and say the humble lead bullet, made of two kinds of metal,
is something wonderful to behold. It is more than a match for critters large and small. It
expands violently, yet penetrates through almost any obstacle. They are inexpensive,
relatively easy to make, accurate and powerful. Maybe there is a tooth fairy.
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