Pretty limited on cartridge selection though.
Sheridan has a patent on the cutaway gauges, but he does license others to make them in calibers that he does not.
We make them in 458 SOCOM, 375 SOCOM, 358 SOCOM, and 450 Bushmaster under our agreement with Sheridan.
We use barrel blank drop to make the gauges, so ours have rifling in them.
Tony Rumore
Tromix