Kind of searching for my own satisfaction, I loaded 10 each Remington Nitro, Remington Gun Club, Winchester AA and Winchester Super X hulls with my "cowboy load" and made a video of shootin' and shuckin' the hulls.

The test gun was a out of the box stock CZ-USA Hammer Coach Gun that I use in cowboy action shooting. The chambers on the CZ are definitely and obviously rough. The above video is a recording of the firing of these hulls.

The Cowboy Action Shooting gang are obsessed with polishing and enlarging the chambers in an effort to improve "shucking" of hulls. I haven't drank the Kool-aid.