oneover

Hello, I just got a new P938 Two Tone, aluminum grips. I will report my first 2 days shooting. Day one, yesterday, the first 6 mags( one 6 round, one 7 round) had at least 1 FTE, after cleaning and re lubing it bacame much better after about 60 rounds. But still was having FTE's with the 6 round flush mag. I was thinking it was my grip. Prior to this initial range trip I had hand polished the feed ramp and hand racked the slide about 300 times. So last night I hand polished the first 1/2 inch of the chamber, I used some soft cloth wrapped around a Bic pen with some Mother's Mag polish. Cleaned and lubed and off to the range today. It was flawless, I shot the 6 round mag one handed and even tried limp wristing one handed, it still fired perfectly. All of this was with 115 grain Winchester White Box from Walmart. I used this because I like it for the range and I had heard to use heavier weights for the 938. I don't want a gun that is ammo sensitive, I figure I pay this much for a Sig it should shoot what I use. I think if more guys tried polishing that first 1/2 of the chamber as well as the feed ramp there would be a lot less 938's going back to Sig. I have owned Kahrs and this is a much better pistol. I am very impressed with the quality, you know it's a Sig when you rack the slide, smooth as silk.

bearone2

glad it worked, welcome from az.

Whisky

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welcome and glad to hear your results

I had been having the FTE problems on my 938 - did the re-clean, re-clean thing and yesterday, at a local gun show, got some 124gr ammo (ex-pen-sive, but can't find it anywhere) - will be looking for a Dremel attachment with which to do some polishing on it - and my other guns

went to Academy this morning and saw they had a 938 on display (can't remember which model but "fancier" than mine and w/Sig night sights (which I have and love 'em) - had thought about getting it for my Wife - called this afternoon and it was gone - $689 - oh well, she has enough guns (it's me who needs more !)

we're probably off to the Range on Tuesday - after we do our finger printing and start the background check for our Tx CHLs - so I'll see if the heavier bullets and ultra cleaning have done the trick

jordub

I have my 938 in layaway. Could you explain the "first half of the chamber" polishing you performed?

nutria

lubing and a clean gun are the secret. welcome from louisiana.

oneover

Yes, I read a post, can't remember where, a guy said if you polish the inside of the chamber, the first half inch or so, just forward of the feed ramp it makes some ammo eject better. Seems Sig leaves small burs or tiny specs of material in that area of the barrel from the factory, or possibly just some minor roughness. So take something a little smaller that the diameter of the barrel and wrap a cloth around it. I found a standard Bic pen worked for me, the office type, like 6 sided clear plastic. I wrapped a cloth barrel patch around it, lightly coated it with Mother's Mag Polish and hand turned it over and over inside that area. I started a new cloth because the Mothers takes some residue from the metal and turns the cloth dark, so I did this 2 times, then put a clean cloth in there and turned it many times until it polished it, like a mirror. Make sure the cloth is a nice tight fit in the chamber. Then clean very well to make sure no residue is in the barrel. I used Mothers Mag Polish because it works very good at polishing, I imagine you could use and car wax, not sure, but Mother's works very well, you can get it at Walmart. A small tub is only about $5. It sure made mine extract the Winchester White Box 115 grain very well. Even weak, one handed shooting. If you are having extractor issues with your 938 its worth a try.

SouthernYankee

Welcome from FL. and thanks for the tip! I haven't had a problem with my P938 but I think I'll polish it anyway. The polish is for Aluminum rims?

Mike94ZLT1

Any chance you could post a pic of what and where you are polishing? I'm still having problems with mine and it has already been sent to Sig once...

oneover

Yes that's the polish, it really works well on lots of things, it made my gold ring look like new.

oneover

I will in the morning, it's the chamber where the brass case sits. Think of it this way, if the brass is a little thicker in some brands of ammo it might hang up in the chamber. If you polish that area of the chamber that brass will pull out easier. Just my thinking, make sense? It's where the bullet is chambered for firing. Just rack the slide and see where your bullet sits before you pull the trigger, but use and empty case, don't want and AD. Please let me know if this helps, I bet it does.

Mike94ZLT1

I took your idea and expanded it a little. I ran to Wally World and got some of those 6 sided Bic pens ($1.16 for 10 of them!) and some mothers polish. I ran home, and got took a small piece of tape and used it to affix a piece of cloth to the end of the pen, and then wrapped it around 2 or 3 times. I liberally coated the cloth in polish, and then stuck the other end of the pen in one of my cordless drills. You know where I'm going with this... Anyways, after a few minutes, the chamber was nice and polished. I'm going to go clean it really well, oil it, and put it back together. I'll go to the range tomorrow with the cheapest 9mm ammo I can find (So far I've had bad luck with 115gr FMJ Blazer and the 115gr FMJ Remington in the yellow box) and report my findings. Thanks for the idea!

SouthernYankee

See, and people say shooting isn't a safe, fun and wholesome activity! What better way to spend some time learning GREAT new ideas from fellow enthusiasts. A Bic pen, Mothers polish and now a Drill . This makes a gun safer and easier to more effectively use, Thanks guys!

oneover

I sure hope it works, and now we have someone else that had the 115 grain cheap ammo issues. It worked for me with my 115 grain Winchester White Box, now we will see with some other problematic brands. In the barrel and chamber area I would never recommend using anything abrasive with a dremmel, but cloth and polish should be fine without going too crazy. Sigs lock up pretty tight and we don't want to do anything to change tolerances.

Mike94ZLT1

I hate to say it, but it did absolutely nothing. I went to the range today and got a box of the crappy Winchester in a white box. The last round in the first magazine did not extract. I had six FTE's and one FTF in a box of 50. It's going back to Sig AGAIN. Any more issues after this and I am going to ask that it be replaced with a different model. As of now, I have ZERO confidence in this gun.