Erich Duplantis
Member
- Joined
- Mar 4, 2020
- Messages
- 11
Why are the cartridges bent and galled on my CMP 1911.
Used Remington 230, ball ammo.
Used Remington 230, ball ammo.
Bent/galled 45 acp cases from GI 1911
- Thread starter Erich Duplantis
- Start date
- Status
edwardware
Member
- Joined
- Feb 23, 2010
- Messages
- 4,426
They are dented at the mouth, and scratched. No galling.
Denting is occurring just after ejection as the case rotates around and the mouth crashes into the slide just behind the ejection port. Extractor and/or ejector are possible causes, but my first guess without any other info is a weak mainspring leading to excessive slide velocity. If you haven't replaced the spring, start there. If that doesn't get it, gird your loins for a trip into 1911 mechanics, and read Kuhnhausen's Manual to begin.
I guess that the scratching is occurring during feeding, very likely in the magazine; check for bent lips. Marking 12 o'clock on a case as you load it, then observing the scratch after ejection might help.
Denting is occurring just after ejection as the case rotates around and the mouth crashes into the slide just behind the ejection port. Extractor and/or ejector are possible causes, but my first guess without any other info is a weak mainspring leading to excessive slide velocity. If you haven't replaced the spring, start there. If that doesn't get it, gird your loins for a trip into 1911 mechanics, and read Kuhnhausen's Manual to begin.
I guess that the scratching is occurring during feeding, very likely in the magazine; check for bent lips. Marking 12 o'clock on a case as you load it, then observing the scratch after ejection might help.
Dewey 68
Member
I voted for bent cases.
Steve in Allentown
Member
edwardware is probably correct but just for grins carefully inspect the lower half of the ejection port for brass smears. If there is evidence of case impact, a tweak to the ejector nose may be indicated or perhaps an extractor diagnostic live fire test to confirm the cause.
243winxb
Member
1911 ejection ports today are lowered and flared on most guns.
Last edited:
JTQ
Member
The reason your cases are bent is because a GI 1911 doesn't have this ...
Yeah, that's smacking into the inside of the slide at the bottom of the ejection port. 
Like Steve said, look for brass marks. That will tell you exactly where the empties are hitting.
I'm finding that this unimpressive ejection is pretty much S.O.P. for original type 1911s. At least it seems that way.
I just reworked my new Auto Ordnance. I wasn't worried so much about dented brass, as I was having to dodge my own shots. Hot brass flung in your face and down your shirt is somewhat distracting. New ejector, filed the relief on the bottom of the extractor claw, and I had to lower the ejection port (which I didn't really want to, but it's ok). Now I know that the shells are just BARELY making it over the ledge, but barely is good enough. They now land about 2 feet away from my right foot, more or less, MOST of the brass has no dents (only occasionally a very slight dent..I think it's the last shot of the magazine), and no brass in my face!
Like Steve said, look for brass marks. That will tell you exactly where the empties are hitting.I'm finding that this unimpressive ejection is pretty much S.O.P. for original type 1911s. At least it seems that way.
I just reworked my new Auto Ordnance. I wasn't worried so much about dented brass, as I was having to dodge my own shots. Hot brass flung in your face and down your shirt is somewhat distracting. New ejector, filed the relief on the bottom of the extractor claw, and I had to lower the ejection port (which I didn't really want to, but it's ok). Now I know that the shells are just BARELY making it over the ledge, but barely is good enough. They now land about 2 feet away from my right foot, more or less, MOST of the brass has no dents (only occasionally a very slight dent..I think it's the last shot of the magazine), and no brass in my face!
Howland937
Member
The guy that has to re-size the brass might appreciate it.
danez71
Member
I would guess that if it's caused by a weak recoil spring that it couls batter the thing to death eventually.
WVsig
Member
- Joined
- Aug 17, 2012
- Messages
- 2,063
This! Ejection ports were lowered and flared not for reliability but because they are easier on the brass for reloaders. It does not need to be corrected unless you reload. Otherwise just keep shooting it. If it is otherwise reliable don't mess with it and turn a working gun into a headache. IMHO
Steve in Allentown
Member
I don't think those dents will cause any reloading problems. I'd say it doesn't need to be corrected unless you're getting hot brass in your face or down your shirt like our friend Stophel. Even then the fix wouldn't require lowering the ejection port. You'd just need to tweak the ejector and extractor a little.
I carried and shot .45s during all my time as a tanker in the Army. All of them had small GI spec ejection ports and I don't ever recall myself or anyone else getting smacked in the the face by ejected cases. If course, these were all WWII or older pistols and had probably been tweaked long before we ever laid hands on them.
AlexanderA
Member
Yes, that's one of the challenges in attempting to put together a WW2 clone. If you have a "GI" gun with a modified ejection port (such as the RIA), a slide replacement is your only option. That's why I like the Thompson / Kahr as the basis for a WW2 clone. Yes, it has the Series 80 firing pin safety, but that's not externally obvious.
The army in WW2 wasn't concerned about reloading brass.
Reloadron
Contributing Member
I agree in that a simple tweak or peak should correct things. Really pretty common and even for those who reload it is not much of an issue. The GI 1911 simply was not designed around the guy who hand loads.
Ron
edwardware
Member
- Joined
- Feb 23, 2010
- Messages
- 4,426
No, but: if it's caused by a weak spring, therefore excessive slide velocity, it's a hint the universe provides you with well before you batter or crack the slide enough to ruin it.
That's why you check that first.
Reloadron
Contributing Member
Yes, and I figure serviceability does not include bent brass or dinged brass. Does a gun meet form, fit and function? If we get a yes then it ships. There is nothing wrong with the gun, the observed dents mean about nothing. While there can be a few causes including a weak spring the gun shoots fine as advertised.
Ron
OP
OP
Erich Duplantis
Member
- Joined
- Mar 4, 2020
- Messages
- 11
Ok...thanks for the feedback! Here’s a little more info, the recoil spring Is 6” long, 30 coils. I have a type 1 ejector, in that it is not square like a type 3 but the face is at 20 degrees. It is a Colt 1911A1Pistol so I am reluctant to do anything that would change its’ uniqueness.
So I guess the first thing to do is replace the recoil spring. Will get the 16 lb. Wolff spring. Shoot a few rounds and see if it changes anything. Also will shoot some SWC To see if the cases get bent. Next is change to a square face ejector. Shoot some more for results.
Yes...I reload and am sure my reload dies will straighten the cases. But..if I can get Better results....
I will also order another extractor just to have it on hand.
Thanks everyone.
So I guess the first thing to do is replace the recoil spring. Will get the 16 lb. Wolff spring. Shoot a few rounds and see if it changes anything. Also will shoot some SWC To see if the cases get bent. Next is change to a square face ejector. Shoot some more for results.
Yes...I reload and am sure my reload dies will straighten the cases. But..if I can get Better results....
I will also order another extractor just to have it on hand.
Thanks everyone.
Steve in Allentown
Member
Ya gotta help me out with this one. I've never heard of ejectors being referred to by "type". How many "types" of ejectors exist? What are the characteristics of each? Are there any pictures of these different types?
Reloadron
Contributing Member
While I have never heard 45 ACP 1911 ejectors referred to by type there are subtle differences.
Like most parts they can be filed or tweaked and peaked. When parts looking you will see terms like "standard" or "extended" frequently. On another note some come with the pin notch pre cut and some don't the pin is 1/16 if I recall correctly and when you file the notch you want the pin to have a nice tight fit on reassembly. With some work for a given load the gun will put all the spent cases in a nice pile, all in one spot.
Ron
DocRock
member
No problem. You want to see mangled brass, look what gets chewed up and spat out by a G3: fluted chamber marks around neck and shoulder, case mouth deformed, a hefty dent in the body, and a nick in the rim from the extractor. It's brutal. And dirty. Wash them, lube them, resize them and they are good to go. I generally only reload them three times.
I have a GI 1911. Cases are not as dinged as yours. They resize perfectly however and are likely to get too short before they wear out or split.
I have a GI 1911. Cases are not as dinged as yours. They resize perfectly however and are likely to get too short before they wear out or split.
Yes, there are differences here and there between makes and between the "GI" and "extended" ejectors, but I have never heard or read of a "Type 1" ejector, as posted in Post #21, so I would need some education on what that is.
- Status
