pillars Size

Discussion in 'Gunsmithing' started by camoman80, Nov 9, 2009.

  1. camoman80

    camoman80 Well-Known Member

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    How should Igo about messuring pillars for my Rem 700 bdl as far as what size for the hole on them. I might as well ask how big i would want the out side of the pillars to be as well. This is just for a stock rifle that I am goin got try to pillar and bed the action
    Thanks
    Matt
     
  2. NesikaChad

    NesikaChad Well-Known Member

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    One way to make them is like these. These are what I make. Hole ID is .3125". Plenty of clearance to ensure the guard screw doesn't hit the stock.

    [​IMG]
     

  3. fj40mojo

    fj40mojo Well-Known Member

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    Chad,
    Does the pillar have to be keyed into the bottom of the action or is this you going the extra mile?
     
  4. NesikaChad

    NesikaChad Well-Known Member

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    When I make them for guns being done in house this is how I do it because that's how all my programming is done for the mills.

    Since the bulk of "DIY" guys at home don't have access to this kind of stuff I altered my retail ones to where you just spot face the pillar hole with a spade bit or drill.

    Performance wise it makes no difference. Seriously. These things have evolved over time and they started out with square heads. I left them that way cause I'm too lazy to go back and change all my programming. That's the only reason.


    EDIT: I read your post again and I think I may have misunderstood you. The pillars don't key in the action at all. No, no, no doesn't work that way. The pillars have a single line point of contact with the receiver. This "stand off" is .050" to allow for a pad of bedding to go between the action and the base of the pillar. The raised "rib" is contoured to the action and prevents screws from crushing the stock while also providing actual bedding material contact. I feel this is much better as you get more of a 1:1 point of contact this way. The epoxy is going to mirror image whatever it contacts. If it were keyed it would act as a recoil lug and that is a big NO NO. Especially with repeaters using a floor detach magazine or hinged floor plate.

    The whole idea behind this was to get away from pillars that end up with a skim layer of bedding that always flakes off later. It also acts as another mechanical lock to ensure the pillar never moves or comes loose. The real feature with the swelled head is that it controls the seating depth of the action. If done correctly it puts the receiver on the exact "waterline" of the stock's top edge. This means the barreled action is half in/half out and level with the stock.

    Hope this helped.

    C
     
    Last edited: Nov 10, 2009
  5. camoman80

    camoman80 Well-Known Member

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    what would be a good size for OD on a round pillar for a bdl action ??
    Matt
     
  6. prtaylor

    prtaylor Well-Known Member

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    I use 5/8" stock and machine it down .010 thou. to make room for bedding compound around it. The 5/8" hole in a remington 700 matches perfectly with the 5/8" milled slot in the bottom of the stock.
     
  7. jmason

    jmason Well-Known Member

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    I always wondered what made those slots in the bedding jobs you posted Chad. You're really into what you do and it shows!!