While we are talking of the safety of using the
wrong ammuntion in a gun it might be well to
comment on the fact that there are many factory
load combinations that can blow guns up and injure
people.
Take for example the fact that many cartridges
are built on similar but not identical cases.
For example, the 30-06, 270, 25-06, 280 Rem,
and many wildcats use the basic 2 1/2 inch
case of the 30-06.
It is hard to interchange any of the above
ammuntion into the wrong gun and get a
dangerous situation but consider the fact
that another group of cartridges use an
almost similiar case to the above 2 1/2
inch case, but it is 1/4 inch shorter. In
this group of 2 1/4 inch cases with a similar
body diameter to the 30-06 case above, you
have 8X57, 7X57, 244 Rem, 257 Roberts, etc.
Since these are 1/4 shorter than the 06
family, you can get some of these to chamber
in guns chambered to the longer 06 cartridges.
For example, you can get some 8X57 to chamber
in 30-06 guns. This is because the larger
8mm bullet rests in the neck area of the
longer 30-06 chamber. If this cartridge is fired
in an 06 gun, it will give an over pressure
and could destroy the gun, hurt the shooter
etc. You might also be able to get a 7X57
into a 270 gun.
Add to this the fact that people often use
one case like a 30-06 and trim it to a shorter
length, then resize, like making 8mm cases
out of 30-06 cases. Then you have a case
marked 30-06 on the base, that is actually
an 8X57. It is easy to see how this might
eventually get into a 30-06 gun and blow it
up.
Next you have the 2 inch cases that the 308
family is made on. These are 308, 358, 243,
260 Rem, 7mm-08. Some of the 2 1/4 cartridges
can be fit into some of these 2 inch chambers
like maybe putting a 308 into a 7X57 improved,
which will give a quite over pressure and
dangerous load.
In the magnum group, they all head space on
the belt. This makes it possible to chamber
many shorter magnums into guns chambered for
the longer magnums. An example would be
chambering a 350 Rem into something chambered
for a long 30 caliber like 300 Weatherby, or
300 Winchester. Of course shooting that 35
caliber in a 30 caliber gun will not give
you the result you are looking for. There
are many other combinations you can get
into similar trouble with.
Then there is the well known problem of putting
a 20 ga shell in a 12 ga gun. This same thing
can happen by putting a 28 ga shell into either
a 20 ga or 16 ga, I forget which.
There are probably many short straight cased
large caliber cartridges that will fit into
some smaller caliber bottle necked case, like
maybe puting a 44 mag into something like a
303 British or 30-40 Krag. You can probably
put a 45 ACP into many chambers like 308
Winchester etc. It would not be smart to do
that though.
By the way, I have seen 38 spec guns that
would chamber 357 cases. Apparently the
maker made the chamber a little longer
than needed.
All in all there are many ways you can get
into trouble loading improper ammunition into
guns. Add to that the possibility of
overcharging with powder, the dangers of
lead poisoning, it makes you wonder why
people load or shoot at all.