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1911 ejector tuning

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Mick

unread,
Sep 10, 1999, 3:00:00 AM9/10/99
to
Hi group.
I own a Colt Commander Model, series 80,
45ACP. I'm very happy with it, but
like anything I own, I have to improve it.
The next thing I want to do is
make it eject better. Right now the brass is
almost always dented when (and
if) I find them on the ground. Also, not
consistent on where it throws the
brass. They are up to 20 feet scattered.
I've heard that a well tuned 1911
can place all the brass in a 5 gallon bucket.
I'd rather not cut the slide
just yet. This gun is used mostly for
practicing. (Target shooting,
bowling pins, and becoming a better shooter.)
Self defense is not ever
expected, but this is the weapon I would use,
if I had to. Any help on
ejector and extractor tuning would be greatly
appreciated.

I'm looking for all of the information I can
gather. My next purchase will
be some Jerry Kuhnhausen books, as I've heard
great things about them. I
don't plan on doing any modifications untill
I study them. I like to do all
my own gun work, so advice to have a good
'smith do the work will be
appreciated, but probably not followed. I'm
a Toolmaker, so I have access
to any tools I may need. I mainly want to
get as much information as I can.

Thank's in advance, Mick.

----------------------------------------------------------------------
Please find out about rec.guns at http://doubletap.cs.umd.edu/rec.guns

Scooter

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Sep 10, 1999, 3:00:00 AM9/10/99
to
Mick wrote:
#
# Hi group.
# I own a Colt Commander Model, series 80,
# 45ACP. I'm very happy with it, but
# like anything I own, I have to improve it.
# The next thing I want to do is
# make it eject better. Right now the brass is
# almost always dented when (and
# if) I find them on the ground. Also, not
# consistent on where it throws the
# brass. They are up to 20 feet scattered.
# I've heard that a well tuned 1911
# can place all the brass in a 5 gallon bucket.
# I'd rather not cut the slide
# just yet. This gun is used mostly for
# practicing. (Target shooting,
# bowling pins, and becoming a better shooter.)
# Self defense is not ever
# expected, but this is the weapon I would use,
# if I had to. Any help on
# ejector and extractor tuning would be greatly
# appreciated.
#
# I'm looking for all of the information I can
# gather. My next purchase will
# be some Jerry Kuhnhausen books, as I've heard
# great things about them. I
# don't plan on doing any modifications untill
# I study them. I like to do all
# my own gun work, so advice to have a good
# 'smith do the work will be
# appreciated, but probably not followed. I'm
# a Toolmaker, so I have access
# to any tools I may need. I mainly want to
# get as much information as I can.
#
# Thank's in advance, Mick.-------------
Mick, I'm no expert, but seems like I have read that when the
cases are thrown too far (more than about 6-ft) you have a
weak or underpowered recoil spring. The slide is too fast
in back travel.
Scooter...

Claude King

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Sep 12, 1999, 3:00:00 AM9/12/99
to
IF the ejector is stock length, and from your description your recoil spring
is either worn out, or too weak for the loads you are using, not uncommon.
try 16 and 18lb recoil springs from Wolf. www.brownells.com has tons of
them.
Mick <mjs...@elnet.com> wrote in message
news:7rc2c7$4qd$1...@xring.cs.umd.edu...

S Hevelin

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Sep 23, 1999, 3:00:00 AM9/23/99
to
Series 80 pistols have enlarged ejection ports, already. Some dents will still
occur even with the increased ejection space. These are not a problem unless
they won't enter your sizing die. Badly dented brass, if consistently
occurring, could be from too hot loads or too long an ejector. Kuhnhausen
doesn't address dented brass beyond ejection port trimming on pre-70 models, if
memory serves me. His 45 book is excellent,and should be read before your
start any work on 1911's. Ejector trimming should only be done as a final
tuning after all other load considerations have been made. You won't get
"minute of 5 gallon bucket" ejection from any stock 45. Maybe 3 foot diameter
with good ammo on a properly adjusted gun.

Scott

Dlmech

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Sep 24, 1999, 3:00:00 AM9/24/99
to
The denting is not from the port being to high..it is from the empty brass
hitting against the back edge of the ejection port as it is being ejected. To
prevent this all that needs to be done is what is called "dimpling" or
"scalloping" the back edge of the port on the side of the slide. (look at some
customized guns to see what i mean) This is why it is done...Randy
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