With a name like Vstrom you must be a motorcyclist.
I just started shooting CAS, two matches under my belt. Of course, they shoot lead bullets; you probably knew that.
At my first match I brought some 158 grain SWC standard to plus-P loads. Most folks seem to shoot lighter bullets, 125 grain seems pretty common but some shoot 115 grain or even 95 grain bullets in the .38. Not that's light. The round nose flat point seems to be most popular, I suppose because it feeds well from the tubular magazines of the lever rifles.
I bought a box of 500 125 grain bullets and loaded them pretty light. If you go to Hodgdon's website, look for Clays powder you will see load data.