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Discussion Starter · #1 · (Edited)
Will a PF9 barrel fit and work in a P11. The look exactly the same except for the feed ramps. The PF9 ramp is maybe a 1/4 inch longer, and therefore a straighter shot for the bullet nose. From pictures it seems that the original PF9s had the same profile barrel as the P11, but after feeding problems discovered early on, they changed to the longer feed ramp barrel. My p11s feed fine on live fire, BUT, sometimes in hand chambering, they hang up on Speer 124 grain hollow points. Anybody own both, and want to swap barrels in your two guns as a little experiment?
 

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You are correct in that the original PF9 used a P11 barrel and eventually had the ramp changed for better feeding. I can't say whether or not a current PF9 barrel would work in a P11 but I would not be concerned about not hand cycling some round, so long as it functions normally when firing.
 
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Discussion Starter · #4 · (Edited)
Trigger Steel Auto part Metal Aluminium

The "new" PF9 barrel is on the left, the P11 is on the right. It looks to me like the PF9 barrel would feed better. The hand cycle jams I get is when a round nose dives and it hits the bottom third of the ramp on my P11 barrel, on the right. If the PF9 barrel would fit and function in a P11, it seems that that would be an improvement. Does anybody own a P11 AND a PF9, who can confirm this, or not. I shoot 124 and 115 grain bullets. I never shoot 147 grain bullets. Did KT make this change in barrels for different weight (size, over all length)bullets? Thanks for any replies!
 

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Discussion Starter · #5 · (Edited)
Well boys, nobody answered me, so I gambled and bought a slightly used PF9 barrel. It fits my P11 well and it hand cycles MUCH better, no problem at all. I do know hand cycling and live fire are much different. Nothing seems to rub or collide, or cause any problems. I will go shoot it next week and report back. It looks very good so far. This MIGHT be a problem solver for any feeding problems of ANY hollow points.

This might make the P11 even slicker than it already is, or it might be a mistake. I would LOVE to hear from any KT factory personnel on this.
 

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Discussion Starter · #7 ·
I have not gotten my calipers out yet, but all the measurements seem the same, other than the feed ramp being slightly longer as the pictures show. It all fits exactly to my feel, and eye.
 

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Discussion Starter · #8 ·
Well boys, I finally fired my P11 with a PF9 barrel installed in it today. It worked 100 percent! I put about 75, 115 grain Blazer Brass ball, rounds through the pistol today without a single problem. I had about 25 rounds of Speer 124 grain +p that I forgot to take. I do know there is a difference between ball and hollow point. I used a KT 12 round magazine and 2 S&W 15 round magazines. The slightly longer feed ramp of the PF9 barrel put VERY small dents it the S&W followers, but caused no other problems at all. If you are having feed problems with your P11, this MAY be a fix. In a week or so I will go back out with the Speer ammo and I will report back. To review, I have bought and tried the PF9 barrel in my P11 because hand cycling the first round was an iffy operation. The Speer ammo sometimes jammed on the P11 barrel short feed ramp. The PF9 barrel hand cycles the Speer, and everything else, as smooth a silk.
 

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Great news.....Thanks for the answer if a Pf9 barrel will work in a P-11.
 

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Neat ... but really, if you're having feed problems with a P11, I'd sooner contact Kel-Tec and have them fix it. It's been my experience that P11's generally aren't very picky when it comes to ammo, and they've been around for a couple of decades. If there was a common enough bug, Kel-Tec surely would have done exactly what you did by swapping in a PF9 barrel - lower production cost by using an existing part, rather than modifying an existing one or R&D'ing a new one.

Nevertheless ... good info. Maybe if they stop production of the P11 at some point, but the PF9 still happens to be in production, and if your original P11 barrel is shot out or otherwise damaged, then at least you can still score a new/replacement barrel that will drop in. :)
 

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Discussion Starter · #11 ·
I own a Sig 229, 7 third generation S&W 9mms, and a Kahr CM9. They are all as smooth as silk. I own 3 KT p11s, the oldest is 18 years old. I have fluffed and buffed all three with special attention to polishing the feed ramps. I have had maybe 5 or 6 jams, or feeding problems while shooting in all that time with the 3 KTs. BUT, the P11s would sometimes jam when hand cycling/loading the first round. I just got tired of that. The problem seemed to be the short, almost 90 degree part of the feed ramp. I looked at the PF9 barrels and I thought I saw a fix. I have been surprised nobody else seemed to have tried swapping barrels before. I thought you guys would be interested in what I have learned. I will report back as I put more rounds through my P11 with the PF9 barrel.
 

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FWIW, the only times I recall having had issues with the P11's that I've owned, it has been with the 12-round mags. I only had one 15-round S&W 59-Series magazine that I used in one (a Mec-Gar, with the sleeve adapter), and it worked fine, but I'm not sure how well other brands of that size work in terms of reliability. I do know the 10-round Mec-Gar mags have a pretty solid reputation for being reliable, although some rattle a bit when fully loaded (doesn't affect function, though). If you still have troubles after the PF9 barrel swap, I'd look into maybe just changing magazines and see how it behaves with a factory 10-round Mec-Gar mag.
 
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Discussion Starter · #13 · (Edited)
I have finally had a chance to get out and shoot 2 of my P11s again. I now have PF9 barrels in both of them. I took about 20 rounds of Speer 124 grain hollow points, 12 rounds of Federal 9BP 115 grain hollow point, and 150 rounds of 115 grain generic ball, and EVERYTHING fed, fired and ejected! The hollow points all hand cycle 100%. The only problem, as noted in an earlier post, is that the PF9 barrel's longer feed ramp leaves a slight dent in the S&W 15 round followers. I have an extra bag full of S&W followers, so I will monitor the S&W followers closely, and swap out any IF they show any cracks or major problems. I am happy with this compromise to have such smooth feeding.

To sum up, PF9 barrels fit, and work better in a P11, than the P11 barrels do. I have even more confidence in my p11s reliability now. I will keep an eye on the follower denting. If any of you are having feed problems in your P11, a PF9 barrel just might fix it.
 

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I have finally had a chance to get out and shoot 2 of my P11s again. I now have PF9 barrels in both of them. I took about 20 rounds of Speer 124 grain hollow points, 12 rounds of Federal 9BP 115 grain hollow point, and 150 rounds of 115 grain generic ball, and EVERYTHING fed, fired and ejected! The hollow points all hand cycle 100%. The only problem, as noted in an earlier post, is that the PF9 barrel's longer feed ramp leaves a slight dent in the S&W 15 round followers. I have an extra bag full of S&W followers, so I will monitor the S&W followers closely, and swap out any IF they show any cracks or major problems. I am happy with this compromise to have such smooth feeding.

To sum up, PF9 barrels fit, and work better in a P11, than the P11 barrels do. I have even more confidence in my p11s reliability now. I will keep an eye on the follower denting. If any of you are having feed problems in your P11, a PF9 barrel just might fix it.
 

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I just read this thread for the beginning and now recall having to redo the feed ramp in my P40 and 11 to get reliable feed with hollow points. I haven't fired the one I got back from the factory yet, but I will pay attention to how it feeds. If I remember correctly it was shoving the bullets back into the case when I used hollow points and I ended up using 158 gr Winchester to get a reliable feed because the 158's are slightly longer and got a quicker start up the ramp. Thanks for the heads up.
 

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Discussion Starter · #17 · (Edited)
I never had a jam shooting hollow points or ball ammo, but sometimes, racking the slide to load the first hollow point, it jammed between the beginning of the ramp and the frame. The ramp in P11's has two angles to it. The PF9 barrels are one smooth angle, and they are a bit longer. The hand cycle jamming did NOT make me happy, or give me confidence in my P11's. One day I had a brainstorm looking at P11 pictures, and I saw a PF9 barrel pictured. I cannot make my P11's jam now, even if I try.
 

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If you recall, the original PF9 had a P11 barrel and there were some feed issues, so they lengthened the ramp. There must be some difference in the geometry there between the 2 guns.
 
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