On Mon, 31 Oct 2005 18:17:37 +0000 (UTC), Christopher Tidy
wrote:

Gunner Asch wrote:
On Sun, 30 Oct 2005 22:16:39 -0600, Jon Elson
wrote:


Ignoramus26744 wrote:

This is purely an idle question. I have no interest in doing this, for
many reasons. The main reason is that 7mm rem mag is armor piercing
even if bullets are made from dung. Anyway. I have some 4.8mm (3/16)
tungsten electrodes (lanthanated). I could, conceivably, cast some
bullets for a 7mm rem mag rifle with the electrode pieces inside, that
would be quite armor piercing. Would they go through, say, 1 inch
thick mild steel plate, assuming propellant loads that are safe for
the rifle?

I'm no expert on armor at all. But, ONE INCH? Have you seen what the
Army and Air Force use for armor piercing ammo? Like the 30 mm rounds
for the A-10? These things weigh a whole POUND each, and are
SOLID U-238 (both hard and heavy as hell!) The armor they are trying
to pierce is about that thick, as far as I know. A tank couldn't
possibly have steel armor too much more than an inch thick, or it would
be too heavy to move.

Jon



LOL...Ah Jon? A 3006 will just about punch an inch of CRS at 100 yrds

3006 ammunition is 7.62 mm calibre, isn't it? I don't know much about
guns, but I do recall that the armour used on the famous "Pig" trucks in
Northern Ireland was a little under an inch thick, and this was regarded
as being adequate protection against the armour piercing 7.62 mm rounds
available to the IRA in the 1970s. Now it was definitely welded steel
armour, but it may not have been mild steel, and I'm not sure of the
range at which it offered protection, but the British Army found that it
did the job.

The diameter of the bullet is 7.62, indeed, but its NOT the same as
the CARTRIDGE designated as the 7.62 x51, which is what the FN-FAL
fired..the basiclly equivelent of our 308 Winchester. The FN-FAL being
the rifle most commonly carried by the Tommies in NA until the *******
SA-80 came into service.

The armor on the Saracen/ BMP type scout vehicles is an alloy, and
well heat treated. Often T1 plate..and its much much tougher than
CRS...chuckle...its a bitch to machine. Very much work hardening.

The Humber Pig used double thick armor with an airspace between
them..at least the later models did...MkII IRRC. Very effective
against hard shot small arms and SOME shaped charges.

Tank armor used to be T1 plate..many inches thick, and the glacis
plates..feet thick.

Now its composit armor, various layers of ceramic, kevlar, aluminum
and steel. Google "Cobham armor"

Chobham armour. I believe it was first used on the British Challenger I
tank, and it's probably a good foot thick. Tanks just have huge engines
and wide tracks to cope with the weight.

Which will shoot though a standard stop sign..a 22 rifle or a 22
pistol, both shooting the same cartridge and at the same 25ft range??
(shooting stop signs is NOT recommened btw)

The rifle because it has the longer barrel, so the bullet has more time
to accelerate, is that right?

Iggy might also like to check out this link. Look at the Steyr round
next to the regular 7.62 mm. That is one big AP round:

http://world.guns.ru/sniper/sn46-e.htm

Chris


Gunner

"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner