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Thread: Cycling problem on Steyr-Mannlicher Pro Mountain Hunter Mk II .308

  1. #1

    Cycling problem on Steyr-Mannlicher Pro Mountain Hunter Mk II .308

    I have a problem with my rifle and wondered if anybody had any experience of similar. When I fire a round through the rifle, it becomes very difficult to work the bolt and release the spent case. It does not jam but requires an excessive amount of force to get the spent case to eject.
    Ive had this problem before putting Sako 150gr through. I put 60 through with no problem then with last twenty had the problem. Switched to winchester bullets and the problem dissapeared. Recently been putting Gecco 170gr through with no real problems, put forty through then last time out had the same problem.

    I will be taking it to the gunsmiths anyway just wondered if anybody might have experienced similar.

  2. #2
    Hi

    A couple of quick comments. Do you clean the chamber on a regular basis? I clean the chamber before I pass a final patch through the barrel. It may be that it needs cleaned. Secondly, if you do normally clean the chamber, be aware that there is a hidden floating collar that engages with the bolt lugs. It is very easy to knock this collar when cleaning. It will rotate and the bolt won't insert. Using a cotton bud or similar the collar can be repositioned by trial and error. Don't force the bolt.

    If cleaning isn't the answer, then track down someone with a set of go/no-go gauges.

    Good luck. JCS

  3. #3
    I do give the chamber I wipe out when cleaning. I dont have any problm inserting the bolt, I dont have problems cycling rounds without firing. Only when I fire the rifle does the bolt start to get very difficult to work.

    My thought on it was that it may have had something to do with obturation of the brass and the chamber being slightly 'flared' where the bullet enters the barrel meaning that when I try to work the bolt, after firing, Im then working against the deformed brass????

  4. #4
    Also what are go/no-go guages?

  5. #5
    Quote Originally Posted by andibrains View Post
    Also what are go/no-go guages?
    http://www.midwayuk.com/apps/eproduc...eItemID=638620

    Regards JCS

  6. #6
    andi

    I have got the same problem on my .308. What caused the problem and how was it fixed?

  7. #7
    Quote Originally Posted by N1trox View Post
    andi

    I have got the same problem on my .308. What caused the problem and how was it fixed?
    If you click on his name on the left of his posts you will see Andibrains last posted on here in 2015 when he was selling the rifle having fired 200 shots...so maybe he never did resolve it...he says it was much loved so he probably did fix it, but he may not respond as he says he is withdrawing from stalking...

    Alan

  8. #8
    SD Regular Greener Jim's Avatar
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    Quote Originally Posted by N1trox View Post
    andi

    I have got the same problem on my .308. What caused the problem and how was it fixed?
    If you start a new post giving details on when it does and doesn't happen along with ammo used and which rifle it is then someone will likely be along to help.
    Any Questions Feel Free to PM me

  9. #9
    Have to say my Pro Hunter 243 is stiff to unlock after a shot. Always has been since I got it. Not new I have to say but never really given it much thought. My old BSA CF2 is loose as a tarts nickers. Both get the same cleaning treatment and the cases all look just fine. If there is a cure I'd be interested but not concerned.

  10. #10
    I don't know if the Pro Hunter and the Steyr Scout share the same bolt design but in the Scout, there is an internal cam that MUST be lubricated with grease. The bolt easily, without tools, disassembles and allows access to the cam race. My Steyr Scout 308 was a bear to cock until I cleaned the old grease out and regreased it. Now it is a slick as butter. Took 5 minutes to fix.~Muir

    (Lucas "Marine" Grease is the stuff to use if you can get it.)
    Last edited by Muir; 30-07-2017 at 02:27.
    "I would rather be exposed to the inconveniences attending too much
    liberty than those attending too small a degree of it." -- Thomas Jefferson

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