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JR FIREARMS

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Posts posted by JR FIREARMS

  1. Due to popular demand we will be reintroducing our Same-day Saturday Service as of Saturday the 3rd of February. There will be limited slots available each Saturday and require booking in advance. 

    Services available for the same-day slots include barrel shortening/threading, barrel crowning, tactical bolt handle conversions, bolt fluting, Hornady OAL gauge modified cases, trigger supply and fit or trigger tuning, minor repairs and adjustments etc. Please contact us for any questions or bookings.
     

    Thanks

    JR Firearms. 

  2. In my experience hammer forged barrels are the ones more prone to distortion/warping, i had it happen during testing on a scrap Rem barrel. It can even be seen due to threading if you look for it.
     

    It all comes down to how much residual stress is in the barrel after manufacture/stress relieving. When you machine the barrel the stresses can release and that is what causes the problem. Hammer forged barrels due to how they are made tend to have more stress in them. Where as button rifled barrels if properly stressed relieved have minimal residual stress. And cut rifled should have virtually none. 
     

    Plenty of people flute factory barrels and it’s fine. But also there is a good chance it will cause problems. So personally i won’t risk wrecking a customers rifle. Normally shortening the barrel is more effective at weight reduction and improved handling. 

  3. 9 minutes ago, Popsbengo said:

    Nice, we used Faro arms at "a well known luxury car manufacturer" in Cheshire to digitise clay renderings amongst other things.  It's a technology that's becoming more accessible now.

    Everything is accessible for a price 🤣😅

    I more use to using gantry CMM’s, so this is a little weird to use. But to have similar accuracy of a ganty CMM but with the flexibility of the arms is pretty cool. 

  4. 1 minute ago, Popsbengo said:

    Do you use heat?  Most Loctite products give up at 300C .  I wouldn't think that sort of temperature would cause any metallurgical issues (with steels).

    I avoid using heat, there is no need for it with these. And it avoids any damage to the bluing or heat treatment. The main issue is gripping the barrel well enough in a normal barrel vice, the stilsons take care of this. 

  5. A couple more new toys added to the workshop. The main one being a Faro CMM arm. This allows precise measuring of parts for QC or reverse engineering. Such as copying the outline of this Sako 85. We then convert the information in to a CAD model for inletting/machining. This is handy for opening up inlets for bedding etc. 

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