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BT 99 locking block

Discussion in 'Shooting Related Threads' started by 338reddog, Nov 13, 2012.

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  1. 338reddog

    338reddog Member

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    Jul 14, 2008
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    I was wondering if the slot in barrel for the locking block is just tappered or stepped and tappered?
    My citori's are just tappered. I just traded for a BT 99 2008 era and the slot on barrel is tappered but has a step that is unlike a citori. Maybe someone can take a side profile pic of the barrel showing the bolt slot.

    Jeff
     
  2. GunDr

    GunDr Well-Known Member

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    The BTs do have a step, but the locking bolt fully extended forward does not make contact with the step. I do not know why it's there. At times when I need to weld up the step because it got filed on and altered to the wrong angle, I cut the slot full depth.

    Doug
     
  3. 338reddog

    338reddog Member

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    Thanks Doug
    The lever is almost in the center. Is it hard for a DIY to replace? and are the parts avail? I am a jeweler and have some gunsmithing exp. Where can new locking bolt be ordered?
     
  4. GunDr

    GunDr Well-Known Member

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    You can get all the parts you need directly from Browning...or you can go to the Brownells website and order them. Brownells is about 10-20% more in cost.

    Fitting is not to difficult as long as the bbl lugs are at the correct angle and no one has filed on them.
     
  5. Johnny

    Johnny Well-Known Member

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    Browning will not sell a locking bolt to just anybody. They restrict parts they deem critical. Not sure, but I think Brownells has the same policy. Must be a gunsmith or maybe they will sell to any ffl holder.
     
  6. archangel

    archangel Member

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    What wears faster the lugs or the bolt? Mike
     
  7. kirbythegunsmith

    kirbythegunsmith Member

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    BT-99 locking lugs have had problems with the bolt sticking in the "bite", so Browning made the "fix" to be a face contact stop for the locking bolt to butt against and prevent excess depth of engagement - and therefore reduce the tendency to stick when closed.

    Any step that is too deep to be contacted was cut in to excess by an inexperienced fitter or else reworked and is not as the factory intended to make a susceptible design less likely to balk. So, in that case, you have either unfamiliarity or inexperience making a superfluous oddity out of a working detail.


    This does not mean that I think that the step cuts were a great idea. The Winchester 21 uses a stop screw to limit bolt extension into the barrel locking surface, so there really is more than one way to "skin the cat".


    Kirby
     
  8. oletymer

    oletymer Member

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    Jan 29, 1998
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    Go to Midwest Gunworks. They sell a kit with the locking lug, springs ant some rods. The cost is about $70.
     
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