Been shooting cast boolits in 92fs for years, no problems. Powder coat is good also. Like above, shoot a few rounds of copper after shooting cast plus normal cleaning.
That's the same recipe I use, but a different loader. I always double check the powder drop. I also carry a wood dowel that others suggest, but have never had a squib. Just take your time!
Congratulations! That is a great accomplishment. I wish I did it when I was young and in the scouts and did not have a job. I have been section hiking Maryland and Pennsylvania which has been tough to do part time and working full time.
He will remember it for a lifetime, way to go!
Yes, use the plastic ones that ammo comes in. I found some black Remington ones that have round stepped holes through the tray. They work fine for 9mm and do not allow the casing to go in too deep. Load them in every other space, which gives enough handling room.