Did they make other calibres with CA headstamps?
Vlad - Century Arms offered at least one other caliber with the C.A. headstamp, and that was the 9 mm Browning Long cartridge (9 x 20 mm SR).
That headstamp may have been limited to calibers made for them by Norma, in Sweden. Am not positive of that, but I don’t recall seing any other calibers.