Good job, grandpa.
I think every kid who has the desire to shoot rifle should learn how to with irons.
Get them interested in across the course CMP matches. It will be fun to watch them make their run to reach their distinguished rifleman badge.
I am envious, I could get my only grandson interested in any kind of shooting.
I did the opposite with my son, I have a scope on my Ruger 1022, so when he started a couple of years ago, it was from the bench with that rifle. Last year I bought him a Cricket rifle and he has been shooting open sights since then, and he shoots offhand now, as mentioned on a previous post.
He likes silhouettes more than paper targets, which is fine by me, as I prefer silhouettes as well.
All that said, I agree they have learn how to shoot both.