Gunsmithing brass sitting in mag well

[armymedic.2]

When cycled at a normal to fast rate my 700 sps is pulling the case out of the chamber, and then dropping it back on top of the mag well instead of throwing it clear.

When done slowly to view the problem it throws the case out of the weapon perfect every time. The rifle only has about three hundred rounds down the pipe and has done this with all factory ammo since day one.

There are no brass marks on the windage turret of the scope, and it is well low of it when cycled slowly and correctly throwing the case. any ideas?

 

[ArmorerRoy]

Re: brass sitting in mag well

My rifle did that when I first got is as well. I replaced the ejector spring with a lighter power spring. It will eject the shells into a hat if I put it under the action after the replacement. An old trick that is shunned by many but I have been guilty of is cutting two coils off the spring. Worse case you have to get another one from brownells for a few $$$. Wolf used to sell rem 700 reduced power ejector springs but I dont know if they still do. If you cut do one coil, test, then do a second....dont go to three.

The spring has to be removed with a punch. If non of this made any sense at all take it to a gunsmith.

Also make sure your ejector is not clogged up with brass.

 

[Wild_Bill]

Re: brass sitting in mag well

reduce the spring power with a lighter rate spring just shortening the spring can work a little but it still retains the heavy springs rate just is shorter also if you get a dremel when the ejector is out use a small diamind round bit and grind the back section of the slot longer so the ejector can petrude firther out of the boltface dont go to far if you get it to come level with the face of the bolt it will be perfect. i am also assuming it is a 223 as the shorter case is the reason that you get issues.

 

[peteyen86]

Re: brass sitting in mag well

hey mate.
Watch the video link below. Is this what is happening? Change the ejector spring. No expert though so might not be right. If the rifle is still under warranty get them to do it.

http://www.youtube.com/watch?v=udQJ2_ziDFo


Pete.

 

[peteyen86]

Re: brass sitting in mag well

There you go. Listen to Wild_Bill.

 

[cinosbus]

Re: brass sitting in mag well

Does it have this problem when there are no other rounds in the magazine? It could be that the top round in the magazine is causing the round you're attemtping to extract to drag or catch and pulling it out of the extractor claw.

 

[Hateca]

Re: brass sitting in mag well

There is a chance you have crap built up behind the extractor.

Scrub the bolt face. Blow out the bolt face with some compressed air. Put a drop of oil in the grove the extractor rides in. Check and see if the extractor compresses freely, and springs back by pushing in on the claw. If not clean it again.

The extractor needs to have compression to it otherwise you can have extraction issues where the extractor will drop the brass before it clears the chamber.

This normally happens during fast bolt movement. The ejector forces the case to bang into the inside of the action right after it clears the chamber. This shock will cause the extractor to drop the case. When you drive the bolt slow there is less shock and the extractor will hold a little better.

 

[armymedic.2]

Re: brass sitting in mag well

thanks guys, sounds like you have it nailed and have seen this before. will do right away!