I am restoring a Remington no. 1-1/2 rifle--32 rimfire converted to 32 WCF. Various writers list loads for the 32 WCF much more powerful than the black powder level loads of the original cartridge, but warn that these are not safe in weak actions such as '73 Winchesters, old pistols. etc.
The rolling block design should be a good deal stronger than a '73 or an antique pistol, as it was chambered in much more powerful rounds even in the black powder era. However, it may be that even in the big, heavy rolling block action heavier loads are not safe.