Erratic ejection CM45 driving me nuts

[stevegr]

I am really tired of losing brass, and even worse, getting it in the face and forehead. I have biased the ejector nose slightly, like I would to help a 1911, but it still ejects anywhere from 3:00 to 7:00, with most going right over my shoulder towards 5:30 - 6:00. about 1/10 bounces off my noggin, or parts my hair.

I tried the 1911 diagnostic trick off removing the magazine and firing single rounds - 5 of 10 dropped down the mag well, one stovepiped - only 4 made it out.

It is looking like extractor tension is low, and it is losing control of the fired case as the next round is getting pushed up by the magazine. The extractor bottoms in the groove, but does not seem to contact the edge of the rim - it also looks like it is striking the case forward of the groove, as if it were too long.

What next? more spring tension? trim the hook so it bears on the rim? Anyone????

[Ikeo74]

The magazine in Kahr pistols serves as a guide for the ejected case and keeps the case from falling out of the ejector by dropping down under it and dropping through the mag well. This is the reason for cases to not eject without the magazine in place. All Kahr compact pistols will do that. Most Kahrs also have erratic ejection. I am not sure why that happens but it may be related to shooting reloads that have some case ruffness and drag on the way out. My cm9 does the same thing and I can find empty cases on both sides and in front and in back. It's a problem I have learned to live with. If you find a fix, post it.

[berettabone]

My MK seems to like to fling them over my right shoulder...................I got used to it..........................a little hot brass keeps you on your toes

[Bawanna]

My PM45 is slightly erratic but not too bad. It does however send one into my forehead at the slightest sign of a weak grip.

Does your extractor hold a case snuggly if you just slide it up under the hook?

Could be it needs to be shortened a tad which is pretty easy to do.

[stevegr]

I see two things - one the extractor bears in the groove, and doesnt contact the rim OD, and two the tension seems very low, particularly in the low position the case sees when the barrel tips down to unlock.

I am tempted to trim the edge of the extractor till it clears the groove and touches the rim, and then increase the tension. I know I am thinking 1911 style, but the logic works for me. Will this help? am I nuts?

Anyone

[Alfonse]

I would like to know if it works. Do some photos if you do. My K9 ejects about like you describe. All my others throw them far to my right side.

[palabman]

I'm in the same boat with my CM45. Not only does it fling brass everywhere and pop me in the face and head occasionally, it really gouges the rim and dents the case mouth. I took the extractor out last night and stoned and polished the sharp edges. I also have issues with off center primer strikes. Sometimes I'm amazed that the cartridge fired at all due to the striker hitting so close to the edge.

[Bawanna]

All of those things are pretty normal. The dented case mouth seems to be universal to some degree, some worse than others. Same for the off center primer strike.
Let us know if the polishing helps, might follow suit myself.

[yqtszhj]

Is the cm45 new? If so give it a couple of hundred rounds before you make any serious adjustments.

[Longitude Zero]

My CW45 was a bit erratic early on now it is fairly consistent dropping between 4-6.

[palabman]

Is the cm45 new? If so give it a couple of hundred rounds before you make any serious adjustments.

I don't know about the OP but mine has about 400 through it. 100 factory, the rest reloads.

[palabman]

All of those things are pretty normal. The dented case mouth seems to be universal to some degree, some worse than others. Same for the off center primer strike.
Let us know if the polishing helps, might follow suit myself.

The machining marks were pretty visible on my breech face so I polished that a bit also. I don't know if that will let the case slide a little farther up to center the strike. I'll be going to the range here later in the week. I'll report back after.

[Bawanna]

The machining marks were pretty visible on my breech face so I polished that a bit also. I don't know if that will let the case slide a little farther up to center the strike. I'll be going to the range here later in the week. I'll report back after.

Once that cartridge goes into the chamber it's as centered up as it's gonna get or it won't go in.

Cleaning up the breech face may help considerable getting them there and kicking them out too. Might help the erratic ejections.

[muggsy]

What all this talk about erratic erections. Have you guys ever heard of the little blue pill?

[CJB]

I have biased the ejector nose slightly

It is looking like extractor tension is low, and it is losing control of the fired case as the next round is getting pushed up by the magazine. The extractor bottoms in the groove, but does not seem to contact the edge of the rim - it also looks like it is striking the case forward of the groove, as if it were too long.

What next? more spring tension? trim the hook so it bears on the rim? Anyone????

The Colt .45 Auto and the Kahr are different, so just toss out the comparisons.

Shoot the hottest loads you can get, until that recoil spring assembly is good and limbered up. Been said before, but here goes again.... Kahr makes that spring assembly such that "it becomes" the spring it needs to be, after it takes its set. And, as spring technology goes, almost no amount of hand racking, or locking the slide back will substitute for the rapidity of motion, and its effect on the spring, that actual firing imparts. The hot loads will cycle better, throw clear better. After about 300 rounds, give or take, you ought to see vast improvement with the ejection pattern, that is, unless you already Bubba'd the ejector and Goober'd the extractor. To the best of my knowledge, neither Bubba nor Goober were ever design engineers for any firearms manufacturer.