Black Hole Weaponry CLAW rifling

[StoneHendge]

The Columbia River Arms experiment is over and BHW is apparently back to being BHW. They even promise to work on their ecommerce skills! I haven't seen this mentioned here so figured I'd post. Curt has come up with a new form of rifling called CLAW - which is said to be "circumferential" rifling that doesn't distort bullets with the primary application being for copper bullets. Claims are:

*Increased velocity
*Unrivaled precision
*Long barrel life
*Made for non-compressible projectiles. It works with
conventional bullets, but is exceptional for Copper.
*Not sensitive to throat wear
*Very tolerant to bullet length and weight variations

https://www.blackholeweaponry.com/bhw-barrels/blank-2/

I have and have had numerous BHWs and they've always shot at or above the price point. I saw it was available in 6.5 Grendel somewhere on the website, but it still isn't the easiest site to navigate and I'm unable to "refind" it.

[37L1]

https://www.blackholeweaponry.com/store/20-INCH---264---6-5---PLATFORM-AR-15-p579146501

CAUDLE POLYGONAL RIFLING

https://www.blackholeweaponry.com/store/AR-15--264-LBC---TWIST-1-8---L--16----P--STND---G--MID---TH--5x24---F--M-p551724514

CLAW Only in Type 1, 264 LBC

[JASmith]

[grayfox]

Soooo, what does this mean? that instead of being rectangular in cross section, and instead of polygonal, it is a semi-circle in cross section? As soon as the tangential point of contact wears down, then what, the rifling touching the projectile loosens up?

[JASmith]

I could not tell from the marks on the bullet whether we are seeing a simple elliptical bore or more than two high spots.

The important observation is that this format should be more tolerant of wear and erosion while keeping accuracy than does conventional rifling.

[Zeneffect]

In practical application to grendel... anyone here actually shoot out their "normal" barrels yet? The design claim of near optimization for all copper projectiles has my interest above all else tbh.

Any borescope shots?

[Fess]

CAUDLE POLYGONAL RIFLING

For some reason I can't download the diagram, but it is a three-lobed design. There is a diagram here:
https://blackholeweaponry.proboards....hese%20barrels.