Noticed cuts/nicks just below the shoulders of my brass after ejecting. Any ideas what it might be from? Maybe a bur? Gun is a Winchester Model 70 22-250.
Thanks
Thanks
Gunsmithing Nicks in brass
- Thread starter texastonk
- Start date
Has it always done this, or did it recently start after some period of proper operation? You'll want to check the feed lips for any sort of a burr or sharp point/edge; if it's not that, then you may have a burr or debris in the chamber. A bit of carefully-placed Sharpie marks on a cartridge prior to running it through the action can help you determine exactly where the scratches are occurring.
Get a flash light and remove the bolt. Look in the chamber and see if you see anything lodged or a burr in the chamber. If nothing is visible in the chamber then check the feed lips. You can check those with you finger trying to feel a sharp edges.
Also the next time you shoot slowly remove a piece of brass noting the orientation in the chamber. Inspect the brass to see which side the notch is coming from to narrow down the problem.
Texastonk;
I have exactly the same problem with my Win 70 in 22-250 that I bought new in 1974. This was before their short actions, just a LA with a blocked magazine. I think the problem is the timing of the ejection cycle . It starts to early and the cases get pulled up against the upper edge of the receiver ring. I have put up with tis for 40 damned years. I am going to let Chad Dixon work his magic and transform this gun into a 284 Win. this month. I don't know enough to advise you what to do.
I have exactly the same problem with my Win 70 in 22-250 that I bought new in 1974. This was before their short actions, just a LA with a blocked magazine. I think the problem is the timing of the ejection cycle . It starts to early and the cases get pulled up against the upper edge of the receiver ring. I have put up with tis for 40 damned years. I am going to let Chad Dixon work his magic and transform this gun into a 284 Win. this month. I don't know enough to advise you what to do.
When the case clears the chamber the ejector kicks the case towards the port but the case hits the edge of the upper lug in the action before it reaches the port. Very common
Dave Tooley: Is there a fix? Or does it really matter? A friend of mine seems to think it may make the brass weak.
I don't know about a Winchester but on a Remington repeater you can reach up through the mag cut and lightly stone the sharp edges off that lugs upper right hand corner (upper right looking through loading port). It happens even more often when a reciever has been trued and the lugs new sharp edges are not lightly deburred.
As Aeon1 recommended you can come in from the mag and polish that corner. I put a cratex wheel on a Dremel tool which speeds the process up considerably. Much easier to do with the barrel off.
