I use 50/90 brass to make WR No.2 Musket brass for my WR rifle.If the 50/90 was not locally available, I think I would look closely at using the .348 case for low pressure loads of black powder (or even lower pressure smokeless loads). It might require a thin walled brass tube bushing around the head. This is not a recommendation but rather it is just an observation passed along for thoughtful consideration when other more suitable brass may not be readily available or too expensive.