Any thoughts on this?

Yes: You are doing something wrong.

"Grind Hard" ammunition would the first thing that comes to my mind...

 

I would recommend CCi ammo.

 

Welcome Dolf, Let me chime in, I carry a CC9 and have not a failure of any kind after using 115 gr, 124 gr, and 147 gr CCI and Federal. I would try to stay away from Winchester and other off brand stuff at least till you have about 500 rounds without a failure. You don't have to pull the slide back to check for a round chambered as you can visually see it from the side as there is a gap for inspection of round, at least on mine. You should be concentrating on not riding the slide with your thumb. When you chamber a round with the slide locked hit the slide release and let it go, do not ride the slide home. All I got. JMHO

 

I will try other ammo and see how it goes. As for ridding the slide I have been guilty of that before and was trying to be careful not to do that.
Thank you both for the suggestions.

 

I wouldn’t argue with that except that it did it with all three brands of ammo.
Also I ran all three brands through my Springfield XDS Mod. 2 and it worked without issue.
As for the grind hard ammo I’ve never heard of it before, it was given to me.

 

Also had a first yesterday with one of the Winchester 115 FMJ rds in the CC9, when I squeezed the trigger and the pin hit all I heard was PFFFT ( sorry don’t know how else to describe that sound) and smoke just floated out of the chamber area. After waiting a bit with muzzle down range I cleared the round, after I was done I retrieved the round (pics attached) and it looked like the primer had cracked in half.

 

After waiting a bit with muzzle down range I cleared the round, after I was done I retrieved the round (pics attached) and it looked like the primer had cracked in half.

That primer looks like it was seated sideways to begin with. I’ve had a few of those while reloading, but always catch them when I drop the rounds in a case gauge.

 

what happened when you inserted a fresh mag and used the slide release?

 

I honestly don’t remember whether I used the slide release or racked the slide when it did it on fresh mags but it also did it multiple times midway through the mags. I would be shooting at the target and then squeeze the trigger and nothing then look and see it wasn’t seated. I could actually push the slide closed from the back and then it would fire. ( not on its own but fire by trigger pull)
D.

 

Few things.
-Try running some 124 grain stuff or some +p or NATO SPEC stuff to loosen the gun up.
-The mag springs in guns like this are beasts and can put too much upward pressure on the stripper rail of the slide slowing the slide down. Load your mags and leave them loaded for a while.
-If you see any high nose up failures to feed see my above comment about mag springs/leaving them loaded.
-Run the gun a bit wet for a while.

Now, might you have an actual problem? Absolutely but the above is easier then sending back to HK and at least gives you some additional data points if you do send it in.

Good luck with it.

 

I’ve used 800 rounds of CCI Blazer 124 gr FMJ in mine with zero issues and ran three mags of Speer LE Gold Dot +P 124 gr GDHP with no issues.

 

I’d buy 2 boxes of s&b 124 and see how it runs

Your 2 ammo choices may be a bit weak

Any issues with the hornady you ran?

Mine runs s&b and Fiocchi 100%

Those are the only 2 brands I buy

 

Yes I had the same issue with the 147 gr Hornady.
Will be trying again with some of the suggested ammo and another cleaning/lube.
Appreciate all the suggestions.
D.

 

Field strip the pistol, take the barrel and ammunition and do a plunk test. I would take a name brand bore cleaner and bronze bore to scrub the chamber and bore, dry and inspect prior to the test.
Search plunk test for an example.

 

Plunk test is a must. I went through this when I switched to the CC9 and had some ammo that was just headspacing on the bullet instead of the case.

 

Maybe the primer was seated sideways

 

Since you are newer to the pistol world, I'm assuming that is with smaller pistols as well. My guess is limp wristing or a finger being too high and slowing down the slide.

You may want to use a larger magazine floorplates to get a better grip. You mentioned a 12 rounder. I would get another and some pinky extension bases. Grip firmly and consciously, until it is a habit, and I think your issues may resolve. Just go slow and train your body to a good grip.

On the primer strike...that may be more of a bad round.

 

Stripped it down cleaned and lubed again then did the plunk test on the different brands of cartridges I have on hand. Here are the results:
Grind Hard 115 FMJ - Failed
PMC 115 JHP - Failed
HORNADY 147 XTP - Failed
WINCHESTER 115 FMJ - Passed
WINCHESTER 124 NATO FMJ - Passed
FEDERAL 115 FMJ - Passed
REMINGTON 147 MC - Passed
MONARCH 124 FMJ - Passed
CBC FMJ - Passed
Next chance I can get out to the range I’ll run a box or two of the 124 that passed and see if I have better results to report.
D.

 

If it failed the plunk test with PMC or Hornady it would be going to HK CS. I wouldn’t waste more ammo until that is sorted out.
I have no idea what Grind Hard is other than a silly name and I would be unlikely to try it so no opinion on their quality. But Hornady and PMC? Yeah those should work.

 

If it failed the plunk test with PMC or Hornady it would be going to HK CS. I wouldn’t waste more ammo until that is sorted out.
I have no idea what Grind Hard is other than a silly name and I would be unlikely to try it so no opinion on their quality. But Hornady and PMC? Yeah those should work.

Without a doubt, Any big name brand should work in any production firearm. Don't waste your time, increase doubt or end up with an injury or mechanical failure.
Not sure of production date on that PMC, but I've seen a few hundred thousand rounds go down range in other firearms without issue.
Mine CC9 has seen, Fiocchi, SB, Federal, Speer and older Winchester 124 ball-oh and 124+p Gold Dot. Zero issues. I do have some of that PMC from that time frame above, need to check it out

 

I’ll reach out to HK CS tomorrow.

 

View attachment 484231
Hello, New member here and no I’m not a bot. Fairly new to the pistol world and HK in general, my son was a big HK fan so I have a couple of his and purchased a new CC9 last week.
Apologies in advance if I don’t use all the proper terminology or lingo.
Earlier this week I took it to the range at lunch for the first time and ran 50 rounds of Grind Hard 115 gr. FMJ through it and had two rounds that I thought had misfired. A couple of days later I went back with 50 rds of Grind Hard 115 gr. FMJ, 50 rds Winchester 115 gr. FMJ and 20 rds Hornady 147 gr. XTP and what I thought was a misfire was actually the slide not fully engaging. This happened with both the 10 & 12 rd mags and all three types of shells, it happened mid way though the mag and also when I racked the slide with a fresh mag, about 8 times total. A couple of times I couldn’t pull the slide back to eject the shell but if I pushed the slide forward it would engage and then I could eject the shell.
When I got home I disassembled and cleaned it and was surprised at the excess of lube it had in it from the factory. After cleaning I lightly lubed it and reassembled doing a function test and all seemed fine. Went to the range yesterday and ran 75 rds Winchester 115 FMJ through it and it happened twice, both times after seating a fresh mag and racking the slide but not during firing. If I pulled the slide slightly back as if checking to see if a shell was in the chamber and then released it to close it would not seat without me pushing it from behind.Tried calling customer service when I got home but they were closed for the day. This is very disappointing as I want this to be my EDC but have no confidence at this point.
Any thoughts on this?
Thanks D. View attachment 484229
View attachment 484230

 

Not familiar with the CC9 pistol but is that lever the slide lock on the pistol in the picture? I have known of people resting their thumbs just hard enough on that lever causing the slide to malfunction. It's a thought?

 

Went to the range today with cleaned and lubed CC9 with a box of Monarch 124 gr JHP and a box of CBC 115 gr FMJ which had both passed the plunk test. Fired off about 80 rounds without any issues at all. Went ahead and called HK CS and explained what I had encountered and they would like me to send it in for the gunsmith to look at.
D.

 

I recently purchased a CC9 as well but have not taken it out to the range yet. With that said, I was running some snaps through it, just getting a feel for the pistol etc. and the same thing the OP experienced occurred. Each time I racked the slide and a round was ejected, the next round was chambered but the slide would not seat all the way. Before seeing this thread I had chalked it up to the snap caps causing the malfunction but now I’m slightly concerned. I will finally have time to get to the range this weekend so I will report back with how it went.

 

definitely reserve judgement until you’ve run quality ammo through it. slingshotting the slide may not replicate the proper action required to chamber a round. the snap caps may also not replicate ammo 100%.

 

hk suggests 124 grain 200 plus down range to properly break it in.. after that you are off tot the races

 

where do they suggest this?

 

Sent it off to HK CS today, will follow up when I get a response.
D.

 

Seated too long? I've seen it with handloads. Haven't seen the weird primer strike though. Definitely send it back for quality control as it seems the chamber is not right possibly.

 

Received my invoice from HK today on the issue of this thread and it appears it was related to the ammo in question. I am going to narrow down the ammo brand I am using and see if it will operate reliably for me. Attached is their report.
D.

 

Received my invoice from HK today on the issue of this thread and it appears it was related to the ammo in question. I am going to narrow down the ammo brand I am using and see if it will operate reliably for me. Attached is their report.
D.

Did they invoice you for the ammo cost? It would be interesting to know if they started with full mags when testing

 

they even used winchester. interesting.

 

Looks like they tested with a range of ammo, even the cheap stuff.

 

Yes it appears they were very thorough and very fast turnaround. The CC9 arrived at HK Monday morning and I had a notification Wed. mid day that it was shipping back.

 

No charge, when I received the label to send it in there was a notation that if there wasn’t any defect with the pistol there could be a $75 service charge + shipping but they did not charge anything. Speaks of their great customer service.
D.

 

No charge, when I received the label to send it in there was a notation that if there wasn’t any defect with the pistol there could be a $75 service charge + shipping but they did not charge anything. Speaks of their great customer service.
D.

A little late to the thread here...sounds like a hard primer/cheap ammo issue and getting your CC9 to loosen up with some TLC. When you go bottom of the totem poll cheap, those manufacturers reduce costs by doing less QA testing and use harder primers to save money, which in effect, is passed onto you if the ammo runs fine...I stay away from Maxtech and Turan; both are very dirty to handle and create excess dirt and grime inside your pistol. I hadn't had any issues with Blazer 124 gr with my CC9. Federal American Eagle has one of the softer primers out there and helped me diagnose a bad ammo situation with another pistol like you experienced with your CC9. I only run 124 gr across the board on all of my HK pistols as well as my CZ's.

I recall getting my CC9 and the slide was stiff challenging to lock back.. I dissembled, removed the factory lube (shelf preserving lube), relubed with CLP, and re-assembed. I locked the slide back for a few days, sent a good 100 to 200 rds down range, and repeated the process a few more times to loosen up the slide. Take care of it, and it will take care of you.

Perhaps the cheaper ammos that ran fine at HK during testing because the CC9 had enough cleanings re-lubes and enough breaking in by that point with various ammos run through it. HK's customer service is excellent, and they are always very helpful over the phone.