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Discussion Starter · #1 ·
Hello, I just bought a used sd9ve and didn't realize issues at purchase and store won't refund so When I go to chamber a round, the bullet sticks on feed ramp and then slams into place in barrel but super smooth on extraction. bullet case shows 2 deep scratches on 1 side of case.

(Here is list of what I have done to try to fix problem) disassembled, deep cleaned, oiled/new OEM guide rod spring/OEM magazine/at least 5 types of ammo/+10% stiffer magazine springs/ polished feed ramp/polished rails..
Pictures below!

I have noticed a small improvement but still haven't fixed the problem. Please let me know of any other ideas before I give up
159204381057249106223.jpg

(#1-Tip of bullet gets caught in middle of ramp when feeding)
15920445641141619744995.jpg

(#2- bullet then hits top of barrel with force before resting in barrel correctly)
1592043907085484172492.jpg

(#3-noticed this wear from previous owner, cartridge or barrel causing this?)

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(#4- guide rod spring scratching barrel?)
1592044221307734222890.jpg

(#5-Deep scrapes on extractor)
15920443658211756830284.jpg

(#6- Residue from bullet at top of magazine before being cycled into chamber)
 

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I dont see anything in your photos that is out of the ordinary for a used gun. Not the clearest photos but nothing jumps out at me. The long scratches is probably the extractor and wouldn't affect feed. Those kind of jams are almost always feed lips but you said you bought a new mag .... or someone else tried to "polish" the feed ramp and changed the angle. I wonder if its still covered under factory warranty. Have you contacted S&W

I have had 2 of the Sigma's which I think was the older brother. Mine came with the super heavy NY trigger but they ALWAYS worked.
 

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Discussion Starter · #3 ·
Yes I bought a new magazine and I also polished the feed ramp. I thought it made a difference, but not by much. Is it normal to have somewhat deep scratches on bullet case once it's been chambered???
 

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Discussion Starter · #4 ·
And no it's not covered, my uncle has work at the s&w factory for 10+ years but he wasn't much help lol
 

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No, deep scratches on the case are not normal. I suspect when you find out and fix what is causing the scratches, you will have solved the problem of failure to feed
 
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