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  1. Rubicon Precision

    Gunsmithing Surgeon extractor problem?

    On a magnum bolt, there’s probably a M16 style extractor that on Surgeon actions, will usually go outside of a typical .710” counterbore diameter when it snaps over the rim. On that one, I’d bet it was a gunsmith error. The OP’s with the Remington extractor could possibly be a manufacturing...
  2. Rubicon Precision

    Gunsmithing Chamber flush system

    1. The OP wants it. 2. One must spend thousands of dollars to get set up to chamber their own barrels. Why stop short to save a couple/few hundred bucks and couple hours of time to spend far more time on each chamber job. 3. Why risk a chip gettin spun between the reamer and chamber? 4. If the...
  3. Rubicon Precision

    Gunsmithing Chamber flush system

    Yes, it is.
  4. Rubicon Precision

    Gunsmithing Armorer's wrench? Removing surefire brake

    Are you sure it wasn’t installed with rocksett? If it was, heat is the wrong approach. Soak it in water over night or longer, then try removing it again. BTW, Surfire brakes come with a little packet of Rocksett, so it’s very possible it was used. That said, the brakes do have a wrench flat...
  5. Rubicon Precision

    Gunsmithing Identical barrels (same load, harmonic, wut-nut)

    If the barrels came from the same lot, chambered at the same time with the same reamer, it should be RFC.
  6. Rubicon Precision

    Gunsmithing Tight chamber?

    My guess is they are not trying to do anything other than be within the allowed spec. I doubt many are standing at their machine saying “I think I’ll make this one go +.0045””
  7. Rubicon Precision

    Gunsmithing Tight chamber?

    Again, in spec is in spec. I don’t have the 6GT print in front of me at the moment, but if there’s .004” between go/no-go, anywhere in between there isn’t sloppy, it’s in spec. Measuring brass, fired from different rifles, chambered with different reamers, checked with different gauges, isn’t a...
  8. Rubicon Precision

    Gunsmithing Tight chamber?

    Go +.0005” will drop on a go gauge and not on a no-go. In spec is in spec.
  9. Rubicon Precision

    Gunsmithing chambering question for gunsmiths

    I agree with LRI, batching your barrels is the way to go if you want true interchangeability with your brass. Especially if machined on a CNC machine, all the chambers will be essentially identical, as well as all other dimensions.
  10. Rubicon Precision

    Gunsmithing chambering question for gunsmiths

    I don’t think that’s a guarantee I’d make either. I could guarantee it measures that in the machine, but it’s pretty optimistic for an assembled guarantee. If I do multiple barrels at the same time, they’ll easily be within .0005” HS of each other. All my barrels will be within zero and .002”...
  11. Rubicon Precision

    Gunsmithing Workbench ?

    I use cheap carpet mats from Home Depot. It’s been a while since I bought them, but I think a 3 pack was well under $10. The edges are seamed so it’s not like lose carpet. When I first get them, I flip them upside down and make squiggling beads of silicone on the bottom and let dry. This keeps...
  12. Rubicon Precision

    Gunsmithing Need advice from Master Gunsmiths

    It’s a simple barrel tenon. I hand write all my programs. I guarantee I can hand write a barrel program start to finish and run it faster than someone could do one on a manual machine.
  13. Rubicon Precision

    Gunsmithing Tikka T3x action build

    What part of Rural Ca?
  14. Rubicon Precision

    Gunsmithing 4-Jaw vs. Spider on the Spindle

    I make diameter/taper specific collet “adapters” when working on the muzzle end. This really isn’t practical on a manual lathe. I still use a set-tru style 6J chuck/#4 solid copper wire when doing muzzle work on the manual machine (which is something I really try to avoid...)
  15. Rubicon Precision

    Gunsmithing Need advice from Master Gunsmiths

    This is true, kinda.
  16. Rubicon Precision

    Gunsmithing Question on Grizzly/Gritters Rods....

    You’re never going to have the same indicator “zero” at two points in the barrel with this method. You don’t need to. All you are measuring is movement.
  17. Rubicon Precision

    Gunsmithing Question on Grizzly/Gritters Rods....

    Quick bored in hotel room sketch... Dashed line is the spindle centerline. To the right is a misaligned tailstock holding the "Grizzly Rod". Top two sketches are with the bore misaligned, 180 degrees apart. Bottom is the bore aligned to the spindle centerline. Again, the tailstock alignment has...
  18. Rubicon Precision

    Gunsmithing mini-lathe worth investing in?

    You can make small parts on a big lathe. It’s harder to make big parts on a small lathe.
  19. Rubicon Precision

    Gunsmithing Question on Grizzly/Gritters Rods....

    You are thinking of it incorrectly. The alignment of the holder 11”-12” away is insignificant. You are measuring movement on the rod. The rod is not spinning.
  20. Rubicon Precision

    6.5 or 7mm Discussion

    Straight 284 and 180s will do what you want with good barrel life.
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