I have had a similar experience as the OP at my Club's range. The young fellow was shooting a Black semi-auto rifle from the bench, and I was shooting my .54 caliber Rocky Mountain Hawken rifle from the off-hand position. The young fellow aske why I shot an old smoke belching rifle like that when there were so many more modern firearms. I told him that at my age I have gone thru all the phases of shooting from rifles to handguns, semi-autos to singleshots and wheel guns. I now find it more relaxing to shoot a muzzleloader. I can shoot all day at the range and most likely not shoot over 60 rounds, where as I pointed to the pile of spent brass the young fellow had on the ground from just about an hour of shooting. I offered to let him try my rifle. I showed him how to load it, explained what sight picture to use and how the set triggers work.His first shot was in the 8 ring on the 50 yard target from off-hand. He loved the set trigger, and he said the weight of the barrel helped him hold steadier. After taking 4 more shots, he was hooked. He starting asking me all kinds of questions regarding shooting muzzleloaders. He now is hooked on them. I helped him pick out his first percussion gun, and now he is spending time at the range with it so he can use it for deer season. A convert is made. He really liked the fact that it was so much cheaper to shoot that his "AR", and he liked being able to see the holes in the target with out using a scope.(Bless his young eyes)