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BT99, BT100 Tech tip

Discussion in 'Shooting Related Threads' started by JACK, May 12, 2011.

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  1. JACK

    JACK Well-Known Member Supporting Vendor

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    This procedure works for all break open guns.

    OK. Here are my rules for lubing a BT99 of any vintage

    When new, they are stiff. Use 30W engine oil on these points

    The hinge pins

    mia_2008_0303575.jpg


    The mono bloc sides and into the ejector
    mia_2008_0303576.jpg


    The receiver/forend iron joint
    mia_2008_0303577.jpg


    Now... The main reasons BTs get "shot loose" is that they are not lubed. If you use oil to start with the gun will break in quicker. But, as soon as you reach the point whereby you like the feel of the action, switch to NAPA wheel bearing grease on the points mentioned above nad forget oil unless that is all you have at the moment.

    The final point of lube with just WBG is the back side of the bbl lug. Always put a little grease on the back of the lug (smear a little on the front catch point too) because the bbl lug wears the thin forend latch metal inside the forend. Here
    [​IMG]


    But most guys have older guns that are kinda "loosie-goosie" and there is only one way to cure some of that short of taking ti to a competent gunsmith (i.e. Doug Braker) Adn that is to sue wheel bearing grease on all the paces mentioned above. The day you start using WBG, is the day your gun stops getting looser.

    Perazzi figured this out long ago and started putting a "key" in the slot where the bbl lug inserts into. Adn they have less issues because of the greater surface area.

    I use these rules for my MX3, my MX15, all guns I buy and sell, and guns I loan, and guns I ship out.

    Don't' fail your gun. Lube it and it will stay snug.
     
  2. sliverbulletexpress

    sliverbulletexpress TS Member

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    I bet if you took 10 new Bt99's out of the box 9 of them would be so tight you could barely get the forearm to latch. They will be very likely to gall no matter what grease or oil you use. A couple of file strokes on the back of the barrel lug and then plenty of lube and you will be ok.
     
  3. JACK

    JACK Well-Known Member Supporting Vendor

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    up for reference
     
  4. NANK

    NANK TS Member

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    What areas do I grease a Beretta 687? Is the oil better than grease?

    Ken
     
  5. Bill Roberts

    Bill Roberts Active Member

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    Great tip Jack, I did it to all three of my BT 100's today!

    Bill
     
  6. tanda1

    tanda1 Active Member

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    NANK, Scroll about a quarter of the way down in the tread linked above.

    Matt(grntitan) posted some Beretta pics that answers your question.
     
  7. NANK

    NANK TS Member

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    That was perfect. Thank you very much.

    Ken
     
  8. gym2

    gym2 TS Member

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    MIA,
    I presently use white lithium engine assembly grease on my BT99. Would that suffice, or would I be better off going the wheel bearing grease route?
    Thanks
    Jim
     
  9. JACK

    JACK Well-Known Member Supporting Vendor

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    Jim. I take the advice of pros. I try not to inject my personal opinions. The WBG recommendation came from Doug Braker (the Gun Dr)

    The WBG is "thicker" and will occupy more space than oil. Likely your grease will do all you want it to do except fill the voids as well as WBG

    But that is a guess.
     
  10. gym2

    gym2 TS Member

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    MIA, your "guess" makes perfect sense. I will be now be going with WBG. I and my BT-99 thank you for your most valuable tip.

    Jim
     
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