These cases are very similar, except for the difference in length. The 7.62x25 is shorter than the 30 Mauser, due to higher operating pressures. If the 30 Mauser cases are fired at hotter 7.62x25 loads in the CZ-52, it will tear the neck off some cases. 460 Rowland is a lengthened heavy duty 45 Auto based case designed by Johnny Rowland. It delivers impressive performance in guns specifically chambered for this.
Conversion kits are available also.
Cases are available factory direct from Starline. Blank Cases - Starline offers several cases that are designed for use in Blanks, including the most popular 45 Colt blank for mounted cowboy shooting. Suitable for black and smokeless powders. 40 Super - Heavy Duty 45 Auto based case necked to 40 cal. Is 45 Super based case necked to 38 cal.