[yamadog35]

I've searched a bit but can't find any recent threads on this so forgive me if it's been covered . . . Looking for any ideas on why this might be happening.

Gen 2 - 9mm. I've had this gun since about March and I've run 600-700 rounds through it but the vast majority has been round nose/FMJ. No real issues until lately. Lately I've wanted to get more serious about the gun as a personal defense weapon, maybe a trunk/truck gun. So I've been running my several choices for defense rounds through it like 124 and 147 grain HST. I've also got some rounds using the Hornady XTP bullet I've tried. Per the pictures below you can see what happens. I can fire typically 5 or 6 rounds and then the jam. Clear the jam, fire 5 or 6 more and jam. Sometimes the round is nose up and you can see the gouge in the case from the bolt. Sometimes it jams straight on. This happens with any magazine I use including tried and true 17 round G17 mags. At the same range trip I can then run as many round nose as I want and it runs perfect. I've field stripped, cleaned, lubed between multiple range trips.

Any ideas? Does it just need a trip to Kel-Tec?

 

[3wbdriver]

This probably doesn't help with your question, but I always advise people to try several different varieties of hollow point ammo to find what works best with a given gun. Some guns are just more finicky about the position or shape of that open nose bullet than others are.

 

[yamadog35]

I'll try some more but so far I've run three different versions of HST (124gr, 124gr +P, 147gr), Speer Gold Dot 124gr, and Precision One 124 gr using the Hornady XTP bullet. All of these have had the same issue.

 

[3wbdriver]

Then it may need to go back to momma. I have to admit I rarely tried any HP in mine. When it was my primary HD gun I couldn't afford HP, and once I got more solvent I had other guns I considered better for the job. Let us know what you figure out.

 

[Broncomike]

Try something with a profile similar to fmj. Like Remington golden Saber or carbon power ball.

 

[GunPilot64]

I enjoy my Sub2000 Gen 2 as a fun range gun; a neat plinker; a novelty gun. But, I would never trust this, or any other Keltec, as a self-defense gun or for any other serious purpose. My experience with multiple Keltec products has been spotty at best. For serious purposes I have Glock, Sig, HK, Colt, Springfield Armory, S&W, etc. These are all proven brands.

Bottom line, if you can afford it, look elsewhere for a self-defense firearm. If you can't swing a new gun at this time, just keep trying to shoot that one until you find an ammo that works, or send it back to the mothership for some work.

My two cents.

 

[Hoosier214]

I have not tried any HP's in my Sub 2000 and I agree about not using a Sub2000 as a truck/trunk gun. A plinker, yes. Maybe if needed I would use as a defensive gun but without trying HP, I would just use FMJ's. It would still get the job done I think.

 

[yamadog35]

I have plenty of other guns for HD/personal defense including SBRs etc. that I know I can rely on and have at the ready so that's not a problem. This one would just fill a nice niche due to its form factor and price. If it doesn't make the cut for my intended purpose, so be it. I'm ready for that. I was just hopeful since it has been completely reliable through almost 800 rounds (after the last range trip) with many types of round nose ammo.

 

[wanderson]

Feed issues

I've not had this issue with my gen 2 Beretta mag version but I HAVE had the same issue with a Just Right carbine in .45 that runs g21 mags. Rounds feed high so 185 gr. fmj is good but 230 gr ball ammo will occasionally not feed.

I did two mods, not sure if one or both fixed it. I took a chainsaw file and slightly rounded the top edge of the chamber, and I pinched the front of the feed lips slightly which seemed to keep the rounds lower. The modded mags run fine in my g21 but this would only work on mags with a steel liner.

 

[SDF880]

Give this gun several hundred rounds and keep it clean! I have never had any issues with any of my S2K's(4) with any ammo, your mileage may vary!

 

[wanderson]

break in

OP posted an 800 round count, I say that's broken in.

I was just now able to see OP's pics on a full screen, based on the dents in the cases it looks like either the bolt is cycling too fast for the next round to come up or the mag isn't always bringing the round all the way up.

Have you tried any other mags? Mine came with a Beretta factory 17 round mag so I'd assume yours came with a Glock factory mag as well. A stronger spring might help.

Being a blowback carbine hotter ammo = faster bolt speed, a heavier bolt, charge handle or buffer could be the fix.

 

[Junkie]

Neither of the ones I've tried have had ANY reliability issues. The 1st gen .40 Glock shoots cheap reloads as well as Winchester Ranger .40S&W 180gr RA40180HP Subsonic JHP with no problem, the 2nd gen 9mm Glock shoots cheap 9mm as well as Federal HST 124gr (normal and +P) no problem.

 

[cocktaildave]

My Gen 2 Glock 9mm Sub will NOT feed any 147 gr truncated cone (flat nose) FMJ bullet and I have tried several. Even after a trip back to KT for that and a couple other issues that were fixed, it will still not feed them. They hit the breach low like your pic 3 and jams with an indent cut into the flat face of the bullet. I have not tried any hollow point bullets though.

This is a bummer cuz I bought the Gen 2 for suppressed use. It will feed the round nose Prvi 158 gr so that is my go to subsonic round. One of these days I will probably rework the face of the breach a bit to form a smoother feed ramp to the chamber. Also I am ordering an extra power mag spring to see if that will force the bullets up more and prevent the low impact at the breach.

 

[yamadog35]

Have you tried any other mags?

I've tried two factory Glock 32 round mags, an SGM 32 round mag, and so far three different Glock factory 17 round mags that I use in my G17. All have the same issue.

 

[icedaddy56]

I tried the 9mm Hornady 135gr + P Critical Duty and they fed fine, The polymer tip may make it act more like FMJ. And this was only a couple mags of FMJ then the critical duty stuff for another mag full on a new gun.
I am anxious to try the Underwood 40 S & W 115 Gr Extreme Defender bullet of the LeHigh design to see how it does in my 40 S&W KelTrc. It clocks at 1400 fps in a Glock 22. Should be 1500 plus in the KelTec. Let you guys know how it does.

 

[bullpup-one]

Icedaddy,
Did you get to try out those115 gr in .40s&w?

 

[icedaddy56]

Not yet, been busy getting things set up for snow and winter. Coming any day now !

 

[Graywhiskers]

I get that type of jam when using a Fiocchi 147 gr hollow point. I don't have any problem with 147 gr HST, or with ball. The Fiocchi has a very tapered nose to a small opening. My first guess is your feed ramp is out of spec. Second choice would be the recoil spring is out of spec. Send it back to Kel-Tec.
I do rely on Kel-Tec as a self defense gun. Both my sub 2000 and my P32.

 

[rob17]

I enjoy my Sub2000 Gen 2 as a fun range gun; a neat plinker; a novelty gun. But, I would never trust this, or any other Keltec, as a self-defense gun or for any other serious purpose. My experience with multiple Keltec products has been spotty at best. For serious purposes I have Glock, Sig, HK, Colt, Springfield Armory, S&W, etc. These are all proven brands.

I dunno. I feel pretty damn comfortable with a KSG.
And if my S2K runs a few hundred rounds without a hiccup, I'd be cool with that too in a pinch.

When I was at the range yesterday, I shot 150rds of Winchester 40cal. 105 rds thru a new S2k with one fail to feed on a fresh mag. 45 rds in a Glock 27 with 2 light primer strikes. Sounds like my KT is a better bet at the moment.

 

[yamadog35]

So I'm following up on this issue I posted back in November. Shortly before starting this thread I had torn the gun down to the bare grip halves so I could install one of the new aluminum triggers and a McCarbo spring kit. I got to thinking that maybe I didn't get everything put back together correctly so I tore it all back down, thoroughly cleaned everything, and lubed what needed to be lubed. Right at that time I ran into a bunch of "life" and just recently got some time to put it all back together.

So I went to the range today and I'm happy to report that every type of ammo I tried ran through flawlessly. That includes five different versions of hollow point (Gold Dots, HST, Hornady Critical Defense, etc.). I put more than 200 rounds through (I think closer to 250) including various weights of round nose.

I still don't know what was wrong the first time around, but it appears that "re-building" from the ground up with some TLC took care of it.