I have done a fair amount of hunting with an I Hollis, double percussion. I found it to be considerable fun, but no disadvantage in the actual shooting unless a fast reload was needed. If shooting black powder shells, only price differential for the ML'r is no hulls & difference in caps vs primers. all else is equal. If you use light low pressure loads in the breech loader you can shoot it cheaper than either. You can easily get 4 times the number of shots per lb of smokeless over equivelent loads with black & hulls last longer in the breech loaders.
Understand I enjoy shooting black, but don't expect a big cost savings.
