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My 357Sig Barsto conversion for my .40S&W has begun experiencing some failure in feeding.

With 357 FMJ the flat nose gets stuck against the feed ramp about 20% of the time. I don't experience this problem with 357 JHP or any 40 S&W rounds.

In comparing the two barrels, the feed ramp for the Barsto is a couple millimeters shorter than the stock 40 barrel. I'm considering having a gunsmith polish it and angle the ramp some more, but wanted to see if anyone else has experienced this and found a solution.

Thanks!
 

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Before I let anyone alter the angle of the feedramp I would conact BarSto. Once you change the geometry, you have voided your warranty and you don't want to do that on an expensive part. Call BarSto and explain what's going on. Polishing you should be able to do yourself very easily with a Dremel, felt tip attachment, and polishing compound. You are not taking any metal off by doing this.
 

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Before I let anyone alter the angle of the feedramp I would conact BarSto. Once you change the geometry, you have voided your warranty and you don't want to do that on an expensive part. Call BarSto and explain what's going on. Polishing you should be able to do yourself very easily with a Dremel, felt tip attachment, and polishing compound. You are not taking any metal off by doing this.
+1 Good point :)
 

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There is an EASIER soloution....Quickly, run down to your local funshop, TRADE that sig for a P99. Problem solved!:D
 

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There is an EASIER soloution....Quickly, run down to your local funshop, TRADE that sig for a P99. Problem solved!:D
Maybe but as the owner of both Sigs and Walthers, I wouldn't part with either. The Sig is an outstanding weapon. Plus you always get reamed on a trade.
 

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If you aren't removing metal, then what benefit can be expected? If there's carbon buildup on the ramp, some gun solvent will do as well as a dremel.

(note: i'm not suggesting the ramp be ground and metal removed)

thorn
To answer your question, you are not doing much by polishing but it may be just enought to prevent a misfeed (particularly in a gun with tight tolerances) due to the accumulation of crud on the feedramp and throat. Bottom line, polishing of the feedramp cannot hurt if done correctly. When you have a polished metal surface, there is less tendency for crud to adhere/stick to the metal surface or said another way, it is harder for crud to become imbedded. Gun solvent in this case will NOT do as well as polishing of the metal - it is best and most conveniently applied after your shooting session not during. Having said this, I am a firm believer that it it ain't broke don't fix it. If your gun feeds fine as is, leave it alone.
 

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If the barrel is to be returned to its manufacturer because it does not work, DO NOT MOLEST IT. Leave it alone, and return it "as is".

M
 
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