USA Shooting has a Junior team. Qualifications include everything that the boys need to qualify for the BB Belt loop. If you have that, and have a BB gun, down load the target from http://www.nssf.org/JrUSA/PDF/08RifleTarget.pdf. Read the qualifications for the award at http://www.nssf.org/JrUSA/ and do as it says.
Once your scout earns his 35 points with 5 shots or less, you can order this free award.
Always use caution when shooting BB's. Follow BSA safety guidelines and never allow your boys to shoot unsupervised.