Thought I'd post a very easy way to keep your feed ramp polished, its a good way to do all you can on keeping rounds entering smoothly into the pipe especially fmj.
break the gun down, if you have a drill at home you can do it, I put a gun bore cleaning tip into my cordless drill, the soft furry kind, not the hard bristles, put some gun cleaning oil on it and and just on low speed ran it on the feed ramp, polished er up nice and shiney, took about 2 minutes tops. you'll now when its enough as the feed ramp will shine up really nice. I had a buddy that was having issues with round feeding. I asked to see his piece and his feed ramp was gummed up with residue, he said he wipes down after shooting, so I told him to give me 5 minutes with it, once I was done, it shined up like bright chrome he went out to the range and called me...no more feeding issues.
in fact i polish all my handguns when it gets dirty say every couple hundred rounds as it keeps the ramp nice and smooth. Especially my carry weapons.
Wow, that's neat! I will have to give it a try when I pick up my used Kel-Tec PF9!
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The key is take it easy polishing feed ramps can lead to disaster if you go nuts with a dremal. Like the guy said a little go's a long way.
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I've used my old K&E electric eraser from my drafting days - it's low speed (unlike a Dremel), does a decent job and little chance the soft gum rubber eraser stick will damage anything.
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I guess to each his/her own but once properly polished (either by the factory or me) then generally the ramp and barrel throats come clean with normal cleaning of my weapons.
as long as i don't have a problem down the road I see no need to continually polish a feed ramp or anything actually.
even polishing does remove small parts of the feed ramp and i would think like anything to much of a good thing can end up bad.
but thats just my take on it.
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I agree with Olfarhos. Polish, polish, polish will have consequences.
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While I had mine apart to polish the slide, I used my dremel on it's lowest speed and buffing wheel with some Mothers on it and did the feed ramp.
Got rid of the numerous microscratches.
Wont have consequences if all ur doing is spinning soft material coated with a bit if oil on it.
Cloth material dont remove metal from things.
Now to bloke who uses abrasive what have u on it yah that wont be good after time