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View Full Version : Cm9 bad rang report.



3one5
09-22-2012, 07:11 PM
First off I'm new to shooting maybe shot 500 rounds. And 150 of them was to day. So I was hitting the paper but know good groups. Had a couple center shots. This was all at 5-7 yards. That is all me and mybe the fact that the gun is so small I feel I might need a bigger gun to help me learn on. Ok so the problem was that I have not had any problems with my cm9 till today. It had a bunch of fallur to fedes where the slide would lock back. All on the second round in a 7 round mag. It seam to work better if I only used six. I also had a stove pipe. This has never happened before.

jocko
09-22-2012, 07:32 PM
go back to the flush mag and test out. If u have zero issues there, it is magaazine related. A stovbe pipe could even be shooter error, tired, etc, grip changed etc. possable weak ass round even. u might also try shootin a few mags left handed to see if tha tgoes aWAY. SOMETIMES the ol thumb is the culprit and u just don;'t know it is happening.

Kahrs are not the easiest to shoot in the same hole,m ur going to a loooong trigger by design and for some it takes time and rounds down range. MOst do fine, but it is what it is ,,,, a close up defense gun, stay at 7 yards and try just POA shooting, seeing the front sight clearly. another thing to show shooters errors or ways is to buy some snap caps and throw a half dozen in with 30 good rounds and let someone load ur magazine so u don't know what is in the mag, one, two, or no snap caps. rust me this will show ur shooting techniques real fast. failures to feed on the 7 round mag and at round 2 could be mag follower issue andif u go to the kahr tech section and hit on the propper prepping thread it gives u some things to check out. Might take 5 minutes to test out but worth it. It is fixable if it is grabbing the magazine release to. Also in that thread it tells u how to look to see if the bullets are by chance hitting the slide lock lever on the inside. odd that it is doing it on the 2 round. I see no reason for that.

again go back to= the 6 round flush mag and test it out. u gotta start some where to eliminate some of the possabilities. Just not to many things cancause premature slide locking back.

1. thumb
2, bullets hitting on the inside of the slide lock lever
3. possable bent or weak slide lock spring (that little thing on the left side where the slide lock lever goes.

at round 2 the follower is not near the slide lock lever, so I can't vision it being the culprit, but that follower now is in that magazine cut out window and could be just slowing down the follower enough to allow that round that is to be feed into the chamber to kinda go haywiere and possable hit that slide lock lever.

Sandng that magazine fllower on the right side until it clears that mag release button seems to solve alot of things. read the thread I suggested..

lets get the gun running right now and worry about the shootin thing next.

PM sent.

3one5
09-22-2012, 07:51 PM
I didn't get a pm and it was definitely the 7 round mag maybe my thumb. But it was all second round and the seven round mag. Do you think I should look into a larger gun to get the basics down

jocko
09-22-2012, 08:09 PM
n o I do not, we just need to get this issue straightened out with the 7 round mag. I pm-ed u with soe tips ad comments. Buying a bigger gun is just that A BIGGER GUN. its gonna do alot differently. I can tell u I do not shoot my PJM9 good, samed gun as the cm9 so I would shoot it no better, but I accept that for what it is designed to do. It has a loooooong trigger by design, that is the onlyt safety on a kahr, nothing to remember if shtf but pullthe trigger, so accept that looooong trigger and just work on it and indeed stay at 7 yards. forget aobut 1" or 2" groups, shoot for COM and work inthe trigger. trst me unknown snap caps in a magaizne wills how shooter error real fast and it will provbe to you that OK NOT THEGUNS FAULT, I know that now, it just proved it to me. If it works OK with the 6 round mag, then for this ol man just stick with that 6 round flush fit mag. that is what u bought the gun for,,, for concealment, so why at more bulk and length for one more round. u should have bought a cw9 if u watned 7 rounds and a flush fit mag. The cm9 is just a super gun and if 6 roundes mag works oK and the 7 round down not then we know it is magazine related. I talkedabout that to u in my PM.

I have never bene an advocate of one range shooting with a 7 round magazine or 8 round magazine and then shoving in a flush fit 6 rund for defense and personal carry. The gun is definitely gonna feel different with that longer magazine and it might shoot different also. Just my two cents on that, so u travel at ur own speed on that. I practice the way I carry 24/7. I play at the range with my K9 and my G19, but my PM9 is my carry peace and it never changes...

CJB
09-22-2012, 08:28 PM
Small gun, not much weight. Your hand, arm, body become part of the weight to hold the frame in one place while the slide moves. Strong ammo helps, not range loads or weak "bargain" reloads or "generic" factory ammo. They're ok for target use, but not ok for edc with the small CM/PM pistols.

Dry fire, then dry fire then dry fire some more, being sure to "call the shot". Worship the front sight. I'm an experienced shooter, have shot competitively and earned expert badge in rimfire pistol - using a Ruger Mark I target, that I reworked. I had a goober of a time with the Kahr trigger at first. Took this experienced old greybeard more than a few hundred to get ok decent, and to this day I'm not great with the Kahr's. But I am passing, and I can hit a man size target at self defense distances, and hit 'em where it counts - right up the middle, or in the head.

Practice my friend.... shoot good ammo, avoid those 7 round mags (known issues for SOME shooters, not all)

jocko
09-22-2012, 08:37 PM
agree what that ol; man said is gospel according to CJB I think he said in 5 lines what I siad in 10. but I am gettin better. some people are just naturally good shooters. almost like golfing etc. I can claim the other way. I had to fight like hell to get half way decent. A kahr is certainly not an ego builder if that is what u want.But that little bastard will save ur life, cause u gonna carry it more than any othger gun you have.. My g19 is my ego builder, but the fokker I can hear it crying alot in the safe to.

I don't carry because I am scared, but I do carry because I am not scared and my PM9 is my 24/7 buddy. Just sayin

3one5
09-22-2012, 11:00 PM
I have been shooting Winchester white box 115 and blazer brass 124. Do you think I should just shot the blazer maybe 115 blazer. Or a dif brand. I guess I'm asking if blazer is a good ammo

jocko
09-23-2012, 07:19 AM
blazer is good stuff. I have been shooting WWB from wal martfor 5 years, it ismy most shot brand and it never fails. It is low in price and for range fodder IMO is excellent.

Ikeo74
09-23-2012, 08:25 AM
This stove pipe and failure to load on the second round problem happens time and again with many different shooters when you get a new 7 round mag for a cm9 and some other models.

Here is my solution, try it:

Quit loading the 7th round into the mag until the new springs take their set. Load it with only 6 rounds and you won't have any problems. Shoot it that way until the springs limber up. It may take a while. The actual problem is this : The 7th round binds up the gun and the mag presses up on the bottom of the slide with so much pressure it slows the recoil down enough to cause the slide to not fully return to battery. This pressure also causes the 1st round to exert pressure downward and this drags the 2nd round forward and out of position so it does not feed properly. A brand new 6 round mag will do the exact same thing when loaded to 6, use only 5 in it too.

The fix: Load a new mag 1 round short. Do it....Load the 7 round mag to 6, and load the 6 round mag to 5. This will eliminate the problem. After the springs get limbered up with use, you can then add the other bullet. Just don't get impatient, and force in that last roung. It will give you failures and you will be back here complaining with more posts. This information is for EVERYONE with new mags, not just this poster. Don't take this as a personal beat down. All new magazines need this treatment. Forget how many Kahr claims the mag will hold. Load them 1 SHORT. End of rant, thanks, TRY IT, YOU WILL Like the results.
The reason why some ammo works better than others is because it has enough pressure to overcome the DRAG. Eliminate the drag and it eliminated the ammo problem too. LOAD SHORT

CrabbyAzz
09-23-2012, 11:31 AM
I have been shooting Winchester white box 115 and blazer brass 124. Do you think I should just shot the blazer maybe 115 blazer. Or a dif brand. I guess I'm asking if blazer is a good ammo

Shouldn't be a problem. My CM9 is feed a steady diet of Winchester white box and the Walmart cheapo Tula. No issues at all.

les strat
09-23-2012, 12:15 PM
If this is a new Kahr, don't be discouraged. I had a few failures to feed and to lock back on the last round during break-in with my CM9, most being in the first 50. Last one was at lockback failure at around 100.. It slicked up and shoots 100% now with anything.

Another thing I always do is tap my full mag on the back to seat the ammo before inserting the mag so they are not riding forward a little bit.

I think these are teething issues during break-in. Keep shooting target and SD loads and then make a call when you get to 500 rounds.

3one5
09-23-2012, 12:59 PM
This stove pipe and failure to load on the second round problem happens time and again with many different shooters when you get a new 7 round mag for a cm9 and some other models.

Here is my solution, try it:

Quit loading the 7th round into the mag until the new springs take their set. Load it with only 6 rounds and you won't have any problems. Shoot it that way until the springs limber up. It may take a while. The actual problem is this : The 7th round binds up the gun and the mag presses up on the bottom of the slide with so much pressure it slows the recoil down enough to cause the slide to not fully return to battery. This pressure also causes the 1st round to exert pressure downward and this drags the 2nd round forward and out of position so it does not feed properly. A brand new 6 round mag will do the exact same thing when loaded to 6, use only 5 in it too.

The fix: Load a new mag 1 round short. Do it....Load the 7 round mag to 6, and load the 6 round mag to 5. This will eliminate the problem. After the springs get limbered up with use, you can then add the other bullet. Just don't get impatient, and force in that last roung. It will give you failures and you will be back here complaining with more posts. This information is for EVERYONE with new mags, not just this poster. Don't take this as a personal beat down. All new magazines need this treatment. Forget how many Kahr claims the mag will hold. Load them 1 SHORT. End of rant, thanks, TRY IT, YOU WILL Like the results.
The reason why some ammo works better than others is because it has enough pressure to overcome the DRAG. Eliminate the drag and it eliminated the ammo problem too. LOAD SHORT

I disagree with you because both my mags worked great for the first 300+ rounds. I was maxing the both out every time. With 6 and 7 round. It was not Untill now that I have had the problem. I'm thinking maybe the fact that it has been loaded with 7 rounds and in my night Stand for two months mabe did something to lossen the spring. Sorry what you have said just doesn't carry weight with what I have seen.

jocko
09-23-2012, 04:18 PM
I agree and also keeping a loaded magazine like u posted should also no effect anything either. something has changed that is four sure. . No doubt 7 round extended magazines for some reasn give more issues than the flush one ever thought of giving. I just never could cuddle up to any extended kahr magazine...

dhgeyer
09-23-2012, 05:54 PM
I have a CW9, not a CM9, but I did have a premature lock back. Just one way back when, but one is too many for me on a carry gun. Here's what I did:

1. Used a stationary belt sander and diamond hones to reduce the bottom of the slide lock lever, round it over, make it thinner. You have to be careful as it is hollow, and you can't take too much off. This made it less likely for my thumb to catch the lever.

2. Carefully rounded, just touched really, the top rear corner of the slide stop lever where it engages the slide. Take off much and it may not lock back on the last round, so do this one carefully and a little at a time. I used a 600 grit diamond hone, and just a few light passes.

3. Took the slide off, loaded a magazine, and put it on the gun. Observed very carefully where the bullet nose came closest to the slide stop lever. Took just a very tiny bit off the slide stop lever at that point. Again I used a 600 grit diamond hone and didn't take much off.

It has never happened again, and I have had no problems with the slide not locking back on the last round.

Can't help with the stovepipe. I assume you are talking about the empty case stovepiping (failure to eject). Could be a light round. The Kahrs have a good strong extractor and I have found the ejection to be totally reliable and very consistent. By that I mean the cases tend to go about the same distance and in the same direction, and wind up in a fairly small area. Some brands of cheap range ammo are getting pretty bad in the QC department I've been noticing. I've more or less gone to loading all my own.