Nice shootin'. What kind of rimfire does he have? Those lawyer triggers can really put a new shooter off (not to mention us oldsters). When you talk about dry firing, is that with your air gun? Very few rimfires can tolerate that without denting the edge of the chamber, etc. If you want to get him a really good youth rifle, look for a CZ 452 Youth model. The triggers are great out of the box and can be easily improved further. Plus they are super built, high quality for the money. Even though they have a short LOP and barrel, a grown man can still use it, too.