Model 85 Med Action 30-06 barrel threading

Discussion in 'Sako Medium Actions' started by chillbilly9, Oct 23, 2019.

  1. chillbilly9

    chillbilly9 Member

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    I bought a Model 85 when they first became available in the US in 2006/2007. Does anyone know if the barrel on the model 85 medium action is suitable to be threaded to accept a suppressor.

     

  2. paulsonconstruction

    paulsonconstruction Sako-addicted

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    Any barrel "can" be suitable. The determining factor is the diameter of the threads. A suppressor for a 30 cal CF rifle will have 5/8" dia. x 24 TPI threads. The suppressor needs a shoulder to tighten up against, so the minimum diameter of the barrel @ the threads needs to be larger than .625" (5/8"). You will probably have to cut the barrel back to a point where you have at least a .7" diameter barrel at the threads for the suppressor to attach properly. It's usually SOP to cut the barrel shorter for using a suppressor to make the addition of the suppressor, which is usually 9" long, less unwieldy anyway, so getting to the point where the barrel is fat enough shouldn't be a problem. There is no need to go larger than .75" diameter, which will give you a 1/16" shoulder for the suppressor to tighten up against, unless you want a shorter barrel yet. Having the threads cut by indexing from centerline of bore, not the outside diameter of the barrel & relieving the threads at the shoulder is also very important.
     

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