On 28 May 2006 12:10:04 -0700, "FED UP" wrote:

"Hot gases are contained by the cartridge case in the chamber.

Gunner....at first the gases blow out that area directly at the top of
the brass.

Blink blink...are you refering to the throat? Any round that makes
12,000 psi or more is going to give you good case obituration (case
expands to fill the chamber).

Given that the 7.62x51 Nato runs in the 50,000 psi range...I suspect
that its gonna seal the chamber really well. In fact..I dont think
Ive even seen a crewserved full auto weapon with that kind of throat
errosion after a gazillion rounds down range.


Then the gases will tend to work backwards along the outside of the
casing.

Only if you are using ultra low pressure loads..and they will be low
temperature, so there will be no chamber erosion.

Eventually there's the brass case, sticking out into a little cavern,
that used to be the chamber.

Mickey Spillane?

Or Mickey Mouse.

You really dont have a clue about ballistics, do you ?

Thats ok..most folks dont, its a rather esoteric subject. But dont try
blowing smoke up our collective asses.

Ya hung your ass out, and got caught. Take your licks..and stop
digging yourself into a deeper hole.
"If thy pride is sorely vexed when others disparage your offering, be
as lamb's wool is to cold rain and the Gore-tex of Odin's raiment
is to gull**** in the gale, for thy angst shall vex them not at
all. Yea, they shall scorn thee all the more. Rejoice in
sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33