How Brux Barrels Are Made

davisrifle

Accurateshooter.com shares with us how Brux Barrels are made.

Brux Barrel-Making Process, Start to FinishWe start out with either 4150 chrome-moly or 416R stainless steel double stress-relieved bar stock. The bar stock starts out at 1-9/32″ in diameter and 20-24 feet long so we cut it to length.

Step two is to rough-contour the outside of the barrel blank in a lathe.

Thirdly, the blank gets mounted into a Barnes gun drill. The cutter bit has holes through which oil or coolant is injected under pressure to allow the evacuation of chips formed during the cutting process. This is called “oil-through” or “coolant-through”. Without this, you wouldn’t want to even attempt drilling a hole 30” long and under ¼” in diameter. The combination of a 3600rpm and good flushing allows us to drill a beautifully straight and centered hole .005” under “land” diameter at a rate of 1” per minute.

Clean the barrel.

Next the blank is sent back to the lathe to machine the finished contour of the outside.

Clean the barrel again.

Now, the blank is sent on to the Pratt & Whitney reamer in which an “oil through” reaming tool is used to cut away the extra .005” left in the drilling process. The reamer makes an extremely accurate bore size and after it is finished the bore will have a better surface finish and will be at the proper “land” diameter.

Clean the barrel again.

In the sixth step we hand lap each barrel to remove any slight tool marks that may have been left by the reamer and inspect every one with a bore scope. If the barrel doesn’t meet our standards for surface finish and tolerance it doesn’t get any further.

Clean the barrel again.

The barrels then go onto the rifling machine which is responsible for cutting the all so familiar grooves in the bore. A caliber/land configuration-specific rifling head is used to progressively shave away small amounts of steel to form the rifling grooves. This is accomplished by simultaneously pulling the rifling head through the reamed blank as the blank is spun at a controlled rate. After each cut, the blank is rotated 90 degrees (for a four-land configuration) and after one full rotation (360 degrees) the rifling head is slightly raised to shave off the next bit of material. This process is repeated until we reach groove diameter.

Clean the barrel again.

Lastly, the barrel is hand-lapped again (to ensure a smooth bore), and a final inspection is performed with the bore scope.

The barrel is cleaned one last time, wrapped, packed, and shipped to [the customer].



Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at nicholas.c@staff.thefirearmblog.com


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  • Where are the pictures?

    • He just posted one. I don’t know if there were pictures with the article.

      • Zachary marrs

        Yeah, more pics would be great, can you get w/ the company, and see if they could furnish some?

  • MP

    This isn’t novel process or a detailed account of traditional process, it’s not even well illustrated(which might have saved it). It’s like an engineer who doesn’t know anything about rifles described how he thought they could be made. Not that he’s wrong.

  • dp

    Individual groove cutting is superb process if you do not expect lots of shots fired. But I am missing brushing after rifling. Additional lap may not be necessary then, any raised material may be swepped away by either brush or bullet. Still, this is rare art in face of general methods such as button broach.

  • Stand Darsh

    TFB literally just copy and pasted the text from Brux’s sub-par mid-90’s website.

    http://www.bruxbarrels.com/gpage.html

    • Pissed off

      That’s why it’s in quotes chief.

    • Ben

      And italics. And the website you cited is cited at the very beginning. Your complaint is?

      • Zachary marrs

        The fact that this is possibly the worst post ive seen on this site? The fact that I can get this info off of the company’s website, and that this article adds nothing of interest?

  • Secundius

    If your not going too mention price. Your already out of my price league.

  • Zachary marrs

    Id recommend not posting this sorta thing. It boring, its worse than that first meopta post. A good rule of thumb; no pics, put up a video, no video, put up a bunch of pics. I realize that Nicholas c. Is new at this, but c’mon, if he had looked at the company’s website, he probably could have put together something more interesting

  • ChuckyTee

    ok so Nicholas needs some direction. The whole copy paste from a different is sad.

  • Secundius

    What I’m trying to wrap around my brain is. Why the Tooling Pattern, and is it for. I can’t honestly see it as a Cooling Down Aid for the barrel. The only advantage I see in the Blood-Grooving Barrel Design is, it make the barrel easier to handle (no slippage) if your hand are wet and/or covered in grease.