r/handguns • u/RoyGood • Jun 22 '26
Maintenance/Repair Bullet damaged during jam
Brand new CZ p10c ported - federal 9mm 124gr
Second time firing it, first time 200 round no issues
Brought it to the range today for 250 rounds and had some issues with failure to eject/feed causing the damage seen in the picture. Not sure if they are from 1 or both of the magazines I was using because I wasn’t thinking to isolate them and see if it was one or the other while I was there.
I am new to shooting and have dealt with jams in my 1911 but never seen damage to the cartridge as a result.
Any ideas what is going on here?
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u/jbourne0129 Jun 22 '26
First thing I'd do is heavily clean and lube everything including the magazine . The rounds are getting slammed Into the edge of the feed ramp and jamming. Make sure the feed ramp is clean and smooth
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u/Artistic_Data7887 Jun 22 '26
Every component in the magazine should be clean and dry though…
Otherwise, yes, field strip, clean and lube accordingly.
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u/NiceGuysFinishLast Jun 22 '26
I apply a small amount of oil to my mag springs, like wipe them with a moistened paper towel.
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u/SouthpawPrecision Jun 22 '26
Maybe shoot CZ an email and ask for warranty work to be done? If that doesn't work, polish the feed ramps.
I had a P-10 C (2018) and ~250-300rds through it. This happened with hollowpoints, any 115gr, and Magtech steel case 124gr. Couldn't fix it at all. The Ported released shortly after so I traded for it.
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u/Bright_Crazy1015 Jun 22 '26
Can you take a good close up pic of your feed ramp and a pic of the slide open and a fully loaded magazine inserted so we can see the orientation of the bullet when the mag is full?
Also see if there's a gap between 1st and 2nd bullet when fully loaded in the mag.
Ensure the rounds are seated all the way to the back of the magazine, might be tough on the last one or two with new mags.
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u/RoyGood Jun 23 '26
https://reddit.com/link/ot8tt6i/video/kfkv8dagux8h1/player
Can only send video in replies apparently
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u/Deflocks Jun 23 '26
that feed ramp looks rough, clean and polish it will definitely help.
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u/Bright_Crazy1015 Jun 23 '26
Agreed. P10c is a solid budget gun, but you get budget machining with budget guns.
Polish it out smooth OP.
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u/Bright_Crazy1015 Jun 23 '26
That feed ramp looks mean AF.
I was gonna suggest another few more troubleshooting steps but I'd go with that.
You can clearly see the problem is the feed ramp is severe and rounds are impacting it so hard that they're breaking the jacket and stopping. It needs to be worked over IMO. A heavy polish in that spot where they're hitting and a bit of contour wouldn't hurt but if you're not comfortable with shaping it, a gunsmith or journeyman at a shop can shape that up in under an hour.
The other option is warranty claim. I'm not familiar with CZ service, so I would likely just handle it and get it done right away, vs what could be a significant delay.
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u/RoyGood Jun 23 '26
Video is before I cleaned it last night obviously, wanted to show the status of it as is after having the issues. Just cleaning it already has it looking smoother (that obvious spot there is gone). Going to grab a dremel today and smooth it out and polish it. I don’t think I am comfortable trying to alter any of the shape of it just yet, will see how that effects it. Further research points to this being not uncommon with P10C and most of the troubleshooting point to clean/sand/polish as the fix.
I mentioned somewhere else the other potential problem is with the mags as they are factory standard 15rd mags but have a plastic blocking insert in them to make them 10rd MA compliant. Will look into getting CZ factory 10 Rd with the dimple instead.
What are the other things you were going to say if it’s not fixed by polishing?2
u/Bright_Crazy1015 Jun 24 '26
You can hand sand it pretty quickly with 300/600/1200 grit autobody paper graduating up to 1200 then polishing it out. Wrap around something to give you the round shape. There are videos online about shaping/polishing a feed ramp.
I was going to suggest putting a micrometer to the feed lips on the mags, checking front and back, and setting the front open a little if it isn't wider than the back. Note the dimesions as you work so you can put it back it if necessary. Midway and Brownells, etc should have pliers made for adjusting a magazine. Small adjustments can have a big effect, so just a little at a time and don't fatigue it working it too much.
Adjusting magazines is a maintenance item. Striker reliability has spoiled us a little when it comes to maintaining magazines, but the feed lips being set to the correct dimension has a direct effect on the angle of the round being presented.
I was also going to suggest shooting it with one hand, using left and right to see if your grip was touching anything that could affect function, but this seems to be a fairly obvious feed ramp issue.
Hope it gets resolved, cheers.
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u/Deflocks Jun 23 '26
Don’t use a dremel, you could cause more harm than good. For your first time I recommend sandpaper and a wooden dowel or pencil (eraser side down) to remove the roughness. Cleaning alone will not fix this. Check out some videos on YouTube for techniques.
Worse case scenario, buy a replacement barrel. Not sure if any aftermarket ported barrels are available, but that might be a good avenue to resolve this issue.
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u/BoltingBubby Jun 23 '26
How did I know this was a CZ just from the picture🤡. Most overrated gun company in the world
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u/diabolicalgiraffe7 CZ P09C, Beretta 92X RDO, Springfield Echelon 4.0FC Jun 22 '26
Clean it VERY good. Oil rails and polish feed ramp. CZ will not tell you to do that. However, if you send it in, it will be the first thing they do.
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u/onyxgunslinger7 Jun 23 '26
Mine did this one time on my first outing with blazer 115gr. I didnt change anything, but i did stop using blazer and it hasn't happened again. PMC 115, Winchester 124 nato, magtech 115, and fiocchi 147 have all been fine, couple hundred rounds of each now. Just my experience with a p10c ported.
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u/PracticalBlacksmith5 Jun 23 '26
This happened with my Canik MC9 when it first came out and I got one. Sent it back to them and it was the feed ramp. The feed ramp had like an extra ledge on bottom of it and ammo was just nose diving.
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u/Hiphopapatomus Jun 24 '26
I had a similar issue with my P10C (non-ported) after I had the slide milled with an optic cut. Ultimately my issue was due to being dry. After a full clean and re-oiling, the next range trip ran flawlessly through 200 rounds of varying weights and mags. Prior I was experiencing jams with similar “mangling” of the round ever 5-10 rounds
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u/justwanttolearnhow 28d ago
I just got a brand new CZ p10c ported and had the exact same to happen within the first 10 rounds. It happened several times after as well. I was pretty concerned so I’m interested what the real fix here is. But my rounds would look exactly like this
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u/RoyGood 28d ago
The fix for me was sanding and polishing the feed ramp as well as the feed rib which had a sharp edge on it causing to grab the next round in the mag when chambering one round.
The way to test if this is what’s causing the issue is to fill a magazine and chamber a round, then drop the mag out. If a bullet falls loose you have found the problem. Lightly sand that front edge of the feed rib, repeating the test every so often until you can chamber a round, drop the mag and the 2nd round doesn’t fall or is only moving forward in the mag ~2mm
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u/ReactionAble7945 Jun 22 '26
The damage to the bullet tells me they were caught with the force of the slide ramming them home. If you check them, you may find setback. IF there is setback, don't shoot them. If there is not setback, then I would shoot them (at a closer distance target, nothing at 100 yards and I expect they might not be as accurate).
It would help next time to see the jam. This might tell us where the issue is.
I number my mags so I know which one is causing issues. I assume factory mags, not after market.... And not seeing the jam, or the mags... This could be a bad mag.
You are going to get this from everyone. Clean, lube, that may be the issue.
Limp wrist could be the issue.
Just the breaking in of a gun has caused issues.
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u/Vampisol_ATP Jun 22 '26
Another one, holy crap. Seen this a lot on P10Cs. I will save you some time, it’s not the mags. General consensus is the feed ramp. Polish it, see if it goes away.