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  1. Rubicon Precision

    Proof Prefit 6.5 Barrel

    If a new 6.5 CM barrel isn’t shooting under an inch with factory Hornady Match ammo immediately, there’s something wrong in the system. Be it the barrel or something else, like Ern mentioned. More rounds is just more rounds wasted.
  2. Rubicon Precision

    Are these threads OK?

    That needs to be cut off and redone.
  3. Rubicon Precision

    Rebarelling an HS Precision Pro Series action

    I have a HTR Pro-Series 2000 from about 2001. It’s been forgotten in the back of the safe unused for probably 15 years. For grins, and now maybe I’ll rebarrel it and offload it, I popped off the barrel. Rather, I put the barrel in my vise, slid in the action wrench and as I was about to put...
  4. Rubicon Precision

    MASSIVE new ATF NFA Change

    I won’t pretend to know the laws in any state, but here in California, if your private property isn’t open to the public, DUI laws are not applicable. Now if your private property happens to be a grocery store parking lot, which is accessible to the public, sure. My point is, trying to compare...
  5. Rubicon Precision

    MASSIVE new ATF NFA Change

    You’d need to show me a federal law that says it’s illegal to allow your 12 year old to drive your truck on your property.
  6. Rubicon Precision

    MASSIVE new ATF NFA Change

    On your own dirt road, you absolutely can.
  7. Rubicon Precision

    6mm creedmoor short barrel

    I’ve got a 16.5” 6CM shop rifle. I’ve only shot factory Hornady 108ELDM ammo. It’s at 2730 fps vs 3040 in my 27” barrel.
  8. Rubicon Precision

    Gunsmithing Lathe

    I'm sure I'll get shit for this, because the internet..., but you don't need all that much lathe for rifle building in the garage. You are only working on about an inch of the bed so if there is a little bit of taper, you won't notice it. You'll likely be using a floating reamer holder, so...
  9. Rubicon Precision

    700 tenon thread diameters

    If it makes you feel better, (going off memory here) there’s the potential for about .012” of clearance in a class 2 fit between a boy and girl 1-1/16-16 thread, and about .009” for a class 3. Things can feel sloppy, real sloppy, and still be in spec. But you’ve got plenty of concern to get...
  10. Rubicon Precision

    700 tenon thread diameters

    Receivers and muzzle devices aren’t gauges, but it does sound like both ends warrant proper gauging and probably the barrel replaced.
  11. Rubicon Precision

    Wanted - Protective Plate or “Shoe” for Manners Buttstock.

    Kydex...
  12. Rubicon Precision

    Bartlein/gunsmithing Question

    A couple years back, I had a customer supplied CF wrapped blank (NOT Bartlein) that I ran out of adjustment in my setup before I could get the throat dialed in. With the muzzle and breech ends of the bore running dead nuts, there was more than .015” of runout 3.5” into the bore. Not one and a...
  13. Rubicon Precision

    Machinists: Any useable threads on this?

    Zooming in on the pics, I think it’s a goner. It may be salvageable if he’s willing to change thread size.
  14. Rubicon Precision

    Gunsmithing Barrel runout question

    What’s to say the contouring process doesn’t move the relationship between the OD and bore?
  15. Rubicon Precision

    Gunsmithing Barrel runout question

    There’s way too many variables to calculate this. Every barrel is different. Depending on how the barrel is held in the lathe, it may be being bent between chucks/spiders to force a reeding that may not be reality in the free state. Working between chucks/spiders, one may think they have .040”...
  16. Rubicon Precision

    Gunsmithing Barrel runout question

    If you read the internet, one would think the bore would run out a few inches because these barrel makers have no idea how to gun drill a deep hole…
  17. Rubicon Precision

    Action receiver/barrel thread length

    Regarding that K31 shank pictures above, that follows pretty much my thoughts. BUT, I think it would need to be a light interference fit or greater for it to make a real “RTZ”. The fit would need to be interference, yet be allowed to be assembled/disassembled with the threaded portion. My...
  18. Rubicon Precision

    To thread or not to thread?

    Finally someone that shoots as much as I do! But in all seriousness, threading ihe muzzle should not decrease the accuracy. May even increase it if a new crown is cut.
  19. Rubicon Precision

    Action receiver/barrel thread length

    I know this is an old thread, but I came across it google searching for something else. Regarding that stress analysis above, I would assume that is based on the fastener being tensioned to about 80% of the yield strength. I am curious what the analysis would look like with a typical barrel...
  20. Rubicon Precision

    Rechambering?

    Throw it in the gutter and go buy another.
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