Just bought a Rogers & spencer

[Da_swed]

Gatofeo, good call, I think Swiss also has higher pressures so I'd stay away from that too.
Da_Swede, 2f bp will work as well if that's all you can find.

Is the fff bp i have now bad for my gun ?

[robhof]

Actually 3f is the preferred powder for B/p pistols up to 50cal. In many places 2f is the only grade found and it will work fine, except it's a little slower burning(lower working pressure).