scratches on extracted brass?????????

W

whitearrow

New member
good evening fellas. after chambering and extracting/ejecting some new ammo to check for function i got to looking at the extracted brass and where the brass double radius shoulder starts all the way to the tip of the bullet there is a scratch. nothing i can feel with my fingernail but a scratch none the less. the rifle is a new weatherby vanguard s2 in 257 wby mag. should a new gun be exhibiting such behavior? if i haven't explained things adequately post up and i will try to answer as best to my knowledge.
thanks,
eddie
 
I've never had this happen but I would get a bore light and see if you find the culprit. Perhaps orient the cartridge in a specific manner as to see where to look. If all else fails take to the retailer and see if they will take care of it.
 
It is not uncommon for new rifles to scratch up ammo during cycling. On the Vanguards (and others with plunger ejectors, it typically happens during extraction as the case is withdrawn from the chamber.
 
All it takes is a burr no higher than .001" !! Find it and polish it off !
Remember that same.001" burr can cause feeding problems too especially in a semi-auto.
 
yeah scorch i can see the brass,while being extracted, riding against the ejection port side of the chamber. i guess i'm just asking is this normal for this particular firearm? i tried to put pressure on the cartridge to go straight just to see if that was what was happening but that extractor spring,or whatever it is, is pretty stout.
thanks,
eddie
 
Pretty much normal. If it really bothers you, polish the chamber and flare the mouth of the chamber. Or just shoot it until it stops doing that.
 
The problem is...

Magazine/magwell feed-lips are very capable of scratching the case on the way in. As the S2 is push-feed with the Sako extractor, top feed a few rounds and see if you get the same scratches. My money is on the feed lips.
-SS-
 
my idea too sweet shooter and yes the feed lips cause more scratched but this i am referring to is from the brass being extracted and the brass riding against the side of the chamber before being thrown clear of the ejection port.
thanks and keep em coming,
eddie
 
It will eventually, but if you like your brass spotless—now/today—you should polish the lips of the magwell with a Dremel. On the S2 it is punched steel and has obvious burrs. You can actually reshape the shoulders of those lips a bit if you want less of a "bump" just after the bolt picks up the round...
-SS-
 
my idea too sweet shooter and yes the feed lips cause more scratched but this i am referring to is from the brass being extracted and the brass riding against the side of the chamber before being thrown clear of the ejection port.
thanks and keep em coming,
eddie
Click to expand...
How would you know?
-SS-
 
No way would I "polish" the chamber walls. You might as well oil them as do that... not good... it will generate excessive bolt thrust.
-SS-
 
There's not a rifle on this planet that you can feed new brass in and not see a few scratches. Anyone that says their rifle doesn't do it (and they'll be here soon lol) needs glasses. Dragging brass across steel makes scratched and nothing will fix that until someone makes a rifle out of material softer than brass. This is a non-issue. No need to worry, it's all part of shooting.
 
"How would you know" I know because I tried that. I loaded the mag with 3 rounds first and yes the mag feed lips,or whatever they are called that hold pressure on the rounds until the bolt strips the next into the chamber, do leave scratches. So to eliminate that variable I loaded just one into the chamber bypassing the mag altogether. And it still leaves the scratch just from the shoulder to the bullet tip whereas when fed from the mag the scratch is on the body of the cartridge.
Thanks,
Eddie
 
As long as it is a cosmetic issue and not a functional issue, there is literally nothing for the dealer or maker to "fix".

No firearm I know of is sold with the expectation that chambered ammo will be completely unmarked when unchambered.

As to polishing, well, I'll keep my opinion on amateur power tool gunsmithing mostly to my self, other than to say that a Dremel and good intentions have ruined many guns.
 
I would not do any grinding or polishing based on cosmetic scratches in the brass. Most rifles will make some minor scratches in the brass during the feeding and ejection cycle.... I recommend you just shoot the thing and quit worrying so much!
 
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