Help With 9mm Grand Power K100 Mk 12 - It Won't Pick Up A Round From The Magazine

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shikano53

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I have a brand new Grand Power 9mm X-trim K100 Mk12. I purchased it here from a fellow member. I broke it down and cleaned it and then took it for it's first trip to the range last week.
It performed flawlessly. I came home, broke it down and cleaned it, re-assembled it, checked it to ensure it was back together OK.
Today I went back to the range and on my first mag I got off 8 rounds and then it jammed. The round wouldn't go into battery. It wouldn't feed.
I cleared it, did it again and once again it would not feed. I tried numerous times with both mags and same issue. I broke the gun down and re-assembled it but no dice. It wouldn't even feed the first round.
So I came home and have been trying to figure out 'why' but I'm totally baffled. I've stripped it down and re-assembled it numerous times, loaded the mags with my dry fire dummy, practice rounds and still the same thing.
I'm wondering if anyone has seen/heard of/or experienced this issue in a GP and or could give me some advice? I'm totally stumped.
Here are a few pics. Thank you in advance for any help or recommendations.
The first one is a pic of my dummy rounds.
g07n4M9.jpg
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The second and third are hopefully showing what is going on.
6Obgysh.jpg


NkH5JD8.jpg
 
Check the shell extractor. It is either misplaced, or holding some cleaning material over a round part. Look closely into it. Especially if you used paper towels or cotton q tips. I will try to reproduce your problem with my x-trim in the evening and let you know. Good luck.
 
I’m guessing your not using reloaded ammo...sometimes if the manufacturer uses tight tollerences in the chamber reloads can run too tight if not sized properly...seems odd the dummy’s won’t load...if you drop any rounds into the chamber with the pistol dissassembled..are they free dropping in and out?
Foolish question I am sure...the trigger guard is locking fully in place? In and back..
Otherwise im going to think about it and see what others come up with...best of luck..
 
Thanks folks. All the ammo is reloads. I've been reloading for decades. I will disassemble it again and check the extractor. I never use paper towels or Q-tips.
I will keep you posted.
 
Import said:
I’m guessing your not using reloaded ammo...sometimes if the manufacturer uses tight tollerences in the chamber reloads can run too tight if not sized properly...seems odd the dummy’s won’t load...if you drop any rounds into the chamber with the pistol dissassembled..are they free dropping in and out?
Foolish question I am sure...the trigger guard is locking fully in place? In and back..
Otherwise im going to think about it and see what others come up with...best of luck..
Click to expand...

^^^^^what he said^^^^^^ I have the Q100 and found with reloaded ammo I had to watch the OAL for being too long, what I loaded sometimes for my Glocks would not work in the Q100.
 
Ladies & Gentleman, thank you for all your comments. I found the problem. Here are 2 pictures that speak louder than words.
I have to say that I am ashamed and embarrassed for not checking this out first, but I was so intent on the externals of the GP that it wasn't until I got home later this afternoon and came back to it and immediately realized what was wrong. This is certainly a huge cautionary for me and I'm hoping that by posting this it will help others as well.
My logic at this moment is that this set of reloads are second time around and three times used. The brass were original Hornady factory ammo and it is on it's second reload cycle. I use just a single stage old RCBS reloading press that has been going for almost 40 years. Here are the specs I have in my reloading log as per this cycle:
124gr Hornady FMJ
4.1gr of Hodgdon Titegroup
I use a Frankford Arsenal Tumbler in solution with stainless steel pins to clean and polish my brass.
I load according to my Speer #14 reloading manual and my Hornady manual. Not sure at this point if I should pull all these loads in this batch and properly recycle the powder and pitch the casings. The most I have ever reused brass is 5x's not counting the use of the first factory shoot.
If anyone knows where I can purchase a replacement barrel I would be most grateful for the information. Another valuable life lesson for this old guy.
Anyway,
I put my calipers on the barrel and it starts out at:
0.547 at the chamber end
0.564
0.574
0.581
This is my very first personal encounter with a squib round. I do not have a brass squib rod; but I think this barrel is toast.
rP5qXxY.jpg

IG4mw0t.jpg
 
Easily knocked out and I doubt any damage to the barrel. U can use a dowel(not recommended as they have a habit of shattering) but look at a 6in 3/8" Carriage bolt with tape over the threads to protect barrel(it should not make contact with the sides). Its just inside the chamber so should easily pop out. Nothing to worry about at all..
dB

**Sorry, I just read it again and I should not have stated 3/8..a wee bit too big..I have used 1/4"**
 
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Lucky Person! At least it lodged where it could block the next round.

Your own reloads or purchased?

I am assuming you didn't hear anything different when it fired that last round?
 
Get a chunk of brass rod. Place it down the barrel, mark it at the muzzle and then take it out. Hold it aginst the barrel with the mark at the muzzle and determine if it is just the one bullet in there or if you have stacked up a couple. Use a good size hammer and pound the stuck bullet out. Check the barrel for any obvious damage. Hard to tell but I don't see any bulging from the photo you posted.

Auggie D.
 
Do you have the case? Can you take closer/better/lit pictures of the barrel? Also, take an empty case and place it inside the chamber then take a picture from the side showing us how far out the case sits. How long are your completed rounds? Did they plunk and spin in the GP barrel? As for cases, I usually reuse them until they split.

*EDIT* I finally put together what your measurements were of, duh, I'm slow at times. Doesn't that barrel have a natural muzzle to chamber taper? If so the barrel should be good and unless you have multiple bullets lodged it should be easy to pop out.
 
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shikano53 said:
Ladies & Gentleman, thank you for all your comments. I found the problem. Here are 2 pictures that speak louder than words.
I have to say that I am ashamed and embarrassed for not checking this out first, but I was so intent on the externals of the GP that it wasn't until I got home later this afternoon and came back to it and immediately realized what was wrong. This is certainly a huge cautionary for me and I'm hoping that by posting this it will help others as well.
My logic at this moment is that this set of reloads are second time around and three times used. The brass were original Hornady factory ammo and it is on it's second reload cycle. I use just a single stage old RCBS reloading press that has been going for almost 40 years. Here are the specs I have in my reloading log as per this cycle:
124gr Hornady FMJ
4.1gr of Hodgdon Titegroup
I use a Frankford Arsenal Tumbler in solution with stainless steel pins to clean and polish my brass.
I load according to my Speer #14 reloading manual and my Hornady manual. Not sure at this point if I should pull all these loads in this batch and properly recycle the powder and pitch the casings. The most I have ever reused brass is 5x's not counting the use of the first factory shoot.
If anyone knows where I can purchase a replacement barrel I would be most grateful for the information. Another valuable life lesson for this old guy.
Anyway,
I put my calipers on the barrel and it starts out at:
0.547 at the chamber end
0.564
0.574
0.581
This is my very first personal encounter with a squib round. I do not have a brass squib rod; but I think this barrel is toast.
rP5qXxY.jpg

IG4mw0t.jpg
Click to expand...

Are you in the Lower Mainland area? If so, come down to DVC. Easy to push that bullet out with a brass rod and I’ll check out the chamber for you. If you need a new one, I can help you arrange that.
 
I have shot thousands of rounds thru my Grand Power....zero issues except it likes to be cleaned after about a 1000 rounds (Yes ...i torture test my weapons so i know the breaking(fouling point...lol).....yours looks to be a squib which means just a primer shot and no powder behind it.
After about a thousand the action gets "gummy" and slows down the recoil action to eventual failure reload.......One drop of oil on the slide wlll get you back into action but will still feel slow.......my M&P was tortured to 8000 rounds....zero stove pipes ,extraction issues,etc....
Tolerances on the Grand Power are a bit tighter......great gun...great trigger and reset right from the factory....wish i could get adjustable rear sights but they are mainly used for distance or friends who play with it.
I reload all my ammo......zero issues with reloaded 9mm (even Glock brass) going thru this.....approx 7000 rounds so far and only the "gummy" crap after about a 1000 and stove piping after about 1500.....
If you would like more info or have any questions/concerns then shoot me a PM......

Cheers

B.
 
Thank you all for the responses. I will try and answer the questions asked.

Graysonk – The reloads are mine and no, I didn’t hear anything after that last shot.

Crazyjackrabbit – I think the barrel is fine. I realize now that GP uses a tapered barrel.

4n2to – Yes the barrel has a natural muzzle to chamber taper.

I’m going to follow through on DB’s suggestion with a 6” 3/8” carriage bolt.

Vanman – if I need a new barrel I will let you know and shoot you a pm

Many thanks to everyone

I’ll post pictures when I’m done.
Chris
 
If u do go the carriage bolt route, make sure it has sufficient clearance into the barrel(not touching sides) so as not to damage it. Another suggestion is an O ring or collar of silicone below the bolt head in case it slips away from you. You certainly dont want to damage the muzzle/crown. I think you'll find its easily removed in this instance, given its location. Its a bit more frustrating and use of the proper expletives is far more common when the bullet is lodged further into the barrel :)
dB
 
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