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Discussion Starter · #1 ·
I've had my LCP for almost 5 months now and like it so far with exception of a 30%-40% failure to feed rate with Corbon 90gr JHP. It's serial number is 370-11***. I've fired approximately 500 rounds with a combination of Winchester ball, Winchester Silvertip, Federal Hydroshock, and Speer Gold Dot with zero problems.

I tried 40 rounds of Corbon early on then 20 recently hoping it was a break in broblem. The Corbon would jam with 1/8 - 1/4" of the slide left to go. It usually took a good tap to get it to ride home.

Here's what I did to fix it. I smoothed up the extractor, then barrel feed area and outer block edges. I did both at the same time, so I'm not sure which was the problem.

I used 180 and 80 grit emery cloth. The 80 is medium and used it for sharp edges and burrs. The 180 is fine and smoothed things out well. Visually and by touch I found burrs and sharp edges then sanded them down. Take it easy on the 80 grit because it can take a lot off if you're not careful. I didn't round the edges drastically, I just took the sharp edges off.

I'm no gunsmith nor machinist, so I was very careful in doing this. I have an XD-9 I examined very closely for the standard I was going for with the finish.

I tested it today with 20 rounds of Silvertip, 20 rounds of Gold Dot and 40 rounds of the Corbon and they all were very smooth.

I could have left well enough alone and just used the ammo that worked, but I am not willing to carry a weapon that I have even the slightest doubt with.
 

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Daryl said:
I've had my LCP for almost 5 months now and like it so far with exception of a 30%-40% failure to feed rate with Corbon 90gr JHP. It's serial number is 370-11***. I've fired approximately 500 rounds with a combination of Winchester ball, Winchester Silvertip, Federal Hydroshock, and Speer Gold Dot with zero problems.

I tried 40 rounds of Corbon early on then 20 recently hoping it was a break in broblem. The Corbon would jam with 1/8 - 1/4" of the slide left to go. It usually took a good tap to get it to ride home.

Here's what I did to fix it. I smoothed up the extractor, then barrel feed area and outer block edges. I did both at the same time, so I'm not sure which was the problem.

I used 180 and 80 grit emery cloth. The 80 is medium and used it for sharp edges and burrs. The 180 is fine and smoothed things out well. Visually and by touch I found burrs and sharp edges then sanded them down. Take it easy on the 80 grit because it can take a lot off if you're not careful. I didn't round the edges drastically, I just took the sharp edges off.

I'm no gunsmith nor machinist, so I was very careful in doing this. I have an XD-9 I examined very closely for the standard I was going for with the finish.

I tested it today with 20 rounds of Silvertip, 20 rounds of Gold Dot and 40 rounds of the Corbon and they all were very smooth.

I could have left well enough alone and just used the ammo that worked, but I am not willing to carry a weapon that I have even the slightest doubt with.
yup, if you have that burning desire to shoot corbon 90 hp, then indeed send the barrel back to Ruger and they will rethroat the barrel for you. It will fire the corbon dpx perfectly. I think the dpx rounds is far superior to the 90 gr corbon hp, as that all copper barnes bullet is super for expansion. Corbon worked with ruger to get this 90 grain bullet to feed right and Ruger has since throated the barrels of all their lcps to make this happen. Mine is serial #24xx much much earlier than yours. Personally for me, I could care less, I shoot the dpx and the 102 grain golden sabres in my lcp flawlessly. Ruger will take care of it , if that is what you want, u can even send the barrel back regular mail, just put a letter in there as to what the issue is and they will obligue. My bet is that if you try enough different brands even after getting the barrel reworked, that you will find a brand or two that doesn't like the lcp. As you can see my serial number is many thousaneds earlier than yours and I just am not going to worry about it. I have never shot the corbon 90 gr hp in my lcp to actually see if it will function right or not, as it will never be my carry round..
 
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Discussion Starter · #4 ·
I thought about sending it in, but I figured I could give it try. If I had any problems requiring anything more than a little sandpaper I would send it in or take it to a gunsmith.

As far as DPX goes, I haven't tried it. None of the shops in my area carry it. It looks like good stuff and I might just have to order some.
 

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I never could find the corbon dpx round around either, so went direct to: Corbon.com and ordered it. Alsl Natchezss.com handles alot of corbon ammo to. Sometimes even lower priced than direct. It is not a cheap round, the Barnes all copper bullet is not a cheap bullet toload, asmost loaders knows--but it works great in the lcp and kt 380. You will get full petal typle expansion out of that barnes round. Corbon did alot of testing with that and they only at the time of development tested it with two kt 380, no other gun. It will feed great in the lcp to. Why the regular corbon 90 gr HP doesn't do well has also been stated on some other posts to. I think that is why corbon/ruger worked out the throating of the barrel alittle more. Also heard that Remumc hp did not do well.


There has been a very good test done with the 380 golden sabrea 102 grain. and they feed perfect in my lcp also. A super round, and maybe a toss up between the dpx and sabre. either willserve you well.
 

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I always polish the ramp on all my semi-autos with a Dremel (bullet shaped polishing wheel) and Mother's Mag & Aluminum Polish. All ammo including Cor-Bons. The only ammunition related feed problem was with Fiocchi ammo that was actually too big for the magazine.
 

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argyle said:
gglass said:
Mother's Mag & Aluminum Polish.
Almost as good as mother's milk - I use it on everything from my feed ramps to my table saw.
According to my Mopar repair guide, it IS mother's milk. :D
 

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triplet said:
I'm definitely going to try this. I've been having trouble with Corbon and Hydroshock, hopefully this will smooth it out.
[/quote


If your lcp has not been back for the recall, then I doubt if polishing the feed ramp will do much good for the corbon 90 grain hp. issue. It is more throating of the chamber than anythign else. When you send it back to Ruger for the recall, they will throat the chamber, but do let them know that it doesn't feel corbon ammo correctly.

Course IMO it never hurts to polish the feed ramp and inside the barrel chamber either. To me probalby the best thing one can do to enhance reliability of any semi...
 
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