The first time I ever shot a muzzleloader was at Philmont Scout Ranch in 1974. When I got home from that trip I bought a kit from Dixie Gunworks and started a lifelong hobby. I went back to Philmont in 2012 as a leader and the muzzleloader program was still a big hit with the boys. For most of the boys in our group it was the first time shooting black powder.
Today BSA encourages the use of muzzleloaders through its Rifle Shooting Merit Badge. If someone wanted to encourage traditional muzzleloading maybe supporting your local camp, if they have a ML program, would be a good way.
Note that I have never seen an inline at a scout camp, all sidelock percussions.
Here's the requirements for the Role Shooting Merit Badge:
Option C—Muzzleloading Rifle Shooting
(a) Give a brief history of the development of muzzleloading rifles.
(b) Identify principal parts of percussion rifles and discuss how they function.
(c) Demonstrate and discuss the safe handling of muzzleloading rifles.
(d) Identify the various grades of black powder and black powder substitutes and explain their proper use.
(e) Discuss proper safety procedures pertaining to black powder use and storage.
(f) Discusspropercomponentsofaload.
(g) Identify proper procedures and accessories used for loading a muzzleloading rifle.
(h) Demonstrate the knowledge, skills, and attitude necessary to safely shoot a muzzleloading rifle on a range, including range procedures. Explain what a misfire, hangfire, and squib fire are, and explain the procedures to follow in response to each.
(i) Shoot a target with a muzzleloading rifle using the five fundamentals of firing a shot.
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(j) Identify the materials needed to clean a muzzleloading rifle safely. Using these materials, demonstrate how to clean a muzzleloading rifle safely.
(k) Identify the causes of a muzzleloading rifle’s failure to fire and explain or demonstrate proper correction procedures.
(l) Discuss what points you would consider in selecting a muzzleloading rifle.
(m) Using a muzzleloading rifle of .45 or .50 caliber and shooting from a benchrest or supported prone position, fire three groups (three shots per group) at 50 feet that can be covered by the base of a standard-size soft drink can.
(n) Center the group on the target and fire three groups (five shots per group). According to the target used, each shot in the group must meet the following minimum score: (1) at 25 yards using NRA A-23 or NMLRA 50-yard tar- gets—7; (2) at 50 yards using NRA A-25 or NMLRA 100-yard targets—7.
Our efforts were targeting BSA camps. Most camps have some form of shooting sports. In the world of instructors, the NRA Muzzleloading Instructor certification is NOT common and among those with it, a precious few are active enthusiasts. A camp with instructors like I’ve described is quite rare. The size of the BSA followed by Royal Rangers, Trail Life and DeMolay encompasses literally millions of youth. It’s a great place to volunteer and support muzzleloading.
Our work was with the camp guns first and then with “Zouave” muskets. We had support from Schutzen and others for guns and consumables so there was no cost to the camp, win win in anybody’s book.