I wouldn't consider modern inlines primitive weapons but at least they shoot blackpowder or BP substitutes.. I think the distinction should be made based on the powder used and the loading and firing components. If it uses smokeless powder I wouldn't consider it a primitive weapon ( no I'm not a Savage fan) If anything it seems like the modern muzzleloaders are getting awful close to being classified as modern single shot rifles rather than blackpowder rifles. The CVA Electra for example. I would consider my Lyman round ball caplock a primitive gun but not any of my inlines . Just my opinion.