CM9 Blown

[wyntrout]

Dang! When my P9 did that... with "factory reloads"... I just pressed the side plate back in place... after putting the trigger bar and spring back under the slide, put my spare PM9 extractor in and pressed on shooting. It wasn't the pistol's fault! Some weak-assed cases were rupturing. I finally stop testing or getting rid of the suspect cases by shooting them after my K9 extractor blew out! Those things are about $16 each + shipping... so I do have some spares. I also carry the tools for stripping down the slide... just in case.

Wynn

[jocko]

ok, I missed that part, u can come out of the rock. My bad.Time for NCIS to come on,so Diva is my DIVA. Tony realy wants to nail her. U can see it in his and her eyes to. before the season ends they will at each other like there is no tomorrow. Don't ask me how I know all of this. Just sayin

[Bawanna]

Aww thank you, I was getting lonely and tired.

[higgsjunk]

Thanks for all the comments and suggestions..

Let me start out by saying that I know the ammo is what caused the problem. For the record, it was factory ammo fresh out of the box, not reloaded..

My issue is how the gun handled the blown case. Not a fan of things blowing off the gun I carry to protect myself and my family.. Am I way off base here in thinking that the barrel should support all the case and not have that cutout i'm showing in the 3rd picture?

I'm not trying to say the gun is a piece of crap.. I love this gun!!

[Ikeo74]

Thanks for all the comments and suggestions..

Let me start out by saying that I know the ammo is what caused the problem. For the record, it was factory ammo fresh out of the box, not reloaded..

My issue is how the gun handled the blown case. Not a fan of things blowing off the gun I carry to protect myself and my family.. Am I way off base here in thinking that the barrel should support all the case and not have that cutout i'm showing in the 3rd picture?

I'm not trying to say the gun is a piece of crap.. I love this gun!!

OK, I am chalenging the validity of your picture that you are claiming that the case is unsupported. I am also offended by your claim of non support. Evidently you did not have the barrel locked into the slide and that unlocked position showed more ot the case making it "appear" to be un supported. In fact, the case "IS" fully supported.
A better way to check support is with the barrel completely removed from the gun. Drop in a live round and take a flashlight and visually check all the way around the case. There is only a very small area of the case visable at any area around the entire case. There is absolutely no half moon unsuppported area that you are showing in your picture. You are inferring that there is a problem where none exists. Now take your caliper and measure the inside case depth of a fired case with the depth measure end of the caliper. Withdraw the caliper and using the protruding end part of the caliper without changing the measurement, hold it on the outside of the case and you will see the peg does not extent beyound the area you could see with the flashlight while looking at the seated bullet. You can do the measurement with a fired case to make it easier. Your bullet failure was not due to an unsupported case, no way. I have a CM9 and everything I have said here I have verified on my own gun.

[jimsea]

Kahrs design is common and we can see what happens when a casing blows when the round is partially supported. It appears detonation will take the path of least resistance which didn't include out the barrel in the OP's gun..

Anyone with first hand experience of what happens when a casing blows when the design of the pistol fully supports the round? I have never come across this.

[scosgt]

Mine is a CM40.

[Ikeo74]

Mine is a CM40.

The support in the barrel will be the same as a CM9.

[CJB]

I don't wanna piss in anybody's Wheaties, but can someone explain how ammo got that far out of the chamber before the case blew? Thats the point where the barrel is just beginning to lock up to the slide. The bullet should have been long gone, and chamber/barrel pressure well safe before the case began be with drawn from the chamber. That last part can be proven by physics, should anyone want the math, I'll be happy to provide it.

I see another problem. I see... and I'm sorry to say, the striker stuck forward, causing a slam fire.

Just my call without seeing the situation in person.

[Ikeo74]

I don't wanna piss in anybody's Wheaties, but can someone explain how ammo got that far out of the chamber before the case blew? Thats the point where the barrel is just beginning to lock up to the slide. The bullet should have been long gone, and chamber/barrel pressure well safe before the case began be with drawn from the chamber. That last part can be proven by physics, should anyone want the math, I'll be happy to provide it.

I see another problem. I see... and I'm sorry to say, the striker stuck forward, causing a slam fire.

Just my call without seeing the situation in person.

A slam fire could have cause the bullet to fire before the lock up, I say that is very possible if the striker was in front of the striker safety instead of behind it. The owners manual talks about that problem and how to correct it and also how it happens. A slam fire would be a user error in re-assembly of the gun after cleaning.