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  1. #1
    Join Date
    Feb 2003
    Posts
    180

    Sako Extractor Problems

    Rem 700 S/A 7MM WSM
    Sako extractor was already installed when I bought the gun
    There is no problem at all with extraction, it pulls loaded and spent cartriges out with ease
    When it comes time to flip the cartrige out of the ejection ort, the case falls back in on top of the other cases in the magazine, or on top of the follower.

    There is a slight chip of material missing out of the "claw" portion of the extractor, perhaps 25% -30% of the claw is missing.

    Yes, I have taken everything apart, cleaned, looked for burrs, lubed, and re-assembled.

    Could this missing piece of the claw be the problem?

  2. #2
    Join Date
    Sep 2003
    Location
    Oriental, NC
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    1,008
    The extractor was probably modified to alter the ejection angle. More towards the 3 0'clock position instead of the 1:30 -2:00 position.
    One of two things is happening. The bolt ID counterbore depth combined with a heavier than needed ID chamfer allows the case to move from under the extractor as the the case pivots towards the loading port. The other possibility is the case is hitting the windage knob on the scope and bouncing back into the action. Reducing the strength of the ejector spring can sometimes help. The biggest mistake with Sako extractor installations is the idea that less counterbore depth is better. I started out doing that but quickly learned it didn't work well. .140"-.150" with a modest chamfer works just fine.

  3. #3
    Join Date
    Feb 2003
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    180
    I already talked to a couple people that mentioned he windage knob situation. After looking closely and slowly, I figured out that the windage knob is not the problem.
    Can you please explain more what I need to look at for the possible counterbore situation?

    So if I have the situation that you explained above, the situation is beyond repair?
    Last edited by Joe; 12-01-2020 at 10:27 AM.

  4. #4
    Join Date
    Nov 2006
    Location
    Augusta, Maine & Palm Coast, Fl
    Posts
    6,443

    How about the ejector spring?

    Quote Originally Posted by Joe View Post
    I already talked to a couple people that mentioned he windage knob situation. After looking closely and slowly, I figured out that the windage knob is not the problem.
    Can you please explain more what I need to look at for the possible counterbore situation?

    So if I have the situation that you explained above, the situation is beyond repair?
    Is the ejector spring very soft? Perhaps the spring has been modified to try to limit the amount of ejection?

    Pete

  5. #5
    Join Date
    Feb 2003
    Posts
    180
    Quote Originally Posted by Pete Wass View Post
    Is the ejector spring very soft? Perhaps the spring has been modified to try to limit the amount of ejection?

    Pete
    The ejector spring is very stiff
    I also swapped it out of a 7Rem Mag that throws brass farther than I can throw a dead Cat.
    No difference.

  6. #6
    Join Date
    Feb 2003
    Posts
    180
    The problem is that when the case mount (empty case) or when the bullet (loaded round) clears the ejector port, the case falls back in to the receiver

  7. #7
    Join Date
    Feb 2004
    Location
    Davenport, Iowa
    Posts
    447
    Quote Originally Posted by Joe View Post
    Rem 700 S/A 7MM WSM
    Sako extractor was already installed when I bought the gun
    There is no problem at all with extraction, it pulls loaded and spent cartriges out with ease
    When it comes time to flip the cartrige out of the ejection ort, the case falls back in on top of the other cases in the magazine, or on top of the follower.

    There is a slight chip of material missing out of the "claw" portion of the extractor, perhaps 25% -30% of the claw is missing.

    Yes, I have taken everything apart, cleaned, looked for burrs, lubed, and re-assembled.

    Could this missing piece of the claw be the problem?
    Joe
    I had this same problem.
    My extractor claw was just wore down and not sharp edges.
    I first thought it was ejector but new ejector and spring did not help problem.
    Ordered a new extractor and problems went away.
    This was for a BAT DS action
    Just my experience.
    Hope I'm not adding confusion to topic?
    CLP

  8. #8
    Join Date
    Feb 2003
    Location
    Fbks,Alaska
    Posts
    403
    OP,
    As Dave Tooley described & to add-

    I would suggest for a sporting rifle once the bolt nose is bushed/soldered/faced to bore the bushing I/D to .005" clearance per side or...ex.532"+.010"=.542" diameter.

    Take your bolt in hand
    Insert a piece of brass into breech face of bolt nose
    Push the piece of brass to 9oclock position
    Slowly rotate case out of bolt face
    Case dropped from extractor & possibly catches in c/bored ring of OEM riveted extractor groove in bolt nose.

  9. #9
    Join Date
    Feb 2003
    Location
    Tennessee
    Posts
    6,582
    I have 5 Pandas with 308 boltface, all 5 extract& eject PPC brass. All are RBLP.


    .

  10. #10
    Join Date
    Sep 2003
    Location
    Oriental, NC
    Posts
    1,008
    A couple more questions.
    How much room is there under the extractor? Does it fit closely to the rim holding it tight against the bolt face?
    Does the extractor make full contact with the rim? Meaning does it push the case to the opposite side of the bolt face.

    All these tolerances can stack up and can cause problems.

  11. #11
    Join Date
    Feb 2003
    Posts
    180
    Well guys, I've got it pretty much figured out.
    Disclaimer: I am not being ungratefful for all the help and suggestions. Just the opposite....... I thank you all.

    Installed bushing in bolt to much tighter tolerances today and re-cut raceway for Sako claw.
    No good.

    Tried my billet claw.
    No good.

    Removed ejector plunger for the 100th time and lengthened cut in side that limits plunger travel via spring pin. Before this the ejector was approx. .030" below bolt face. Set plunger to flush with bolt face so the plunger has a bit longer "push" on the case. It flipped the case out on my work bench. Imagine that. Did a little more work on the plunger and set it to .010" above bolt face. Got a little better.

    I can see now what the real problem is.
    The shortmag case just has too big and fat of an azz to come out the ejection port. After Bear season is over I am going to modify the insides of my ejection ports to give them a nice angle so the base of the case is not hitting the sharp corner of the ejection port.

    A good test before I do this will be to cut a window in the side of a case in the area where it will hit the corner of the ejection port.
    If it throws the brass like it should, modify ejection port.

    Bottom line........................ (my opinion)
    The shortmag family of cases are just barely operational in a stock 700 short action if you want to use it as a repeater

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