I just finished working with a fellow firefighters 6 yr old setting up a superlight in 243. The young man was so excited. I loaded up several loadings of IMR 4895 with a Remington 80gr PSP. I believe we settled on 30.5grs of the IMR 4895. I'm going to load a few with the a 100 gr Hornady Interlok and see how he does with it. But worst case is he uses the 80 gr Remington. The young man had been practicing sitting on the ground dryfiring off sticks with his dad coaching him. Well, it must have paid off. He hit the cardboard deer with "real ammo" every shot. Not great groups, but at 6 yrs old, off shooting sticks, I even became jealous that my dad didn't have me shooting that young. I'm just happy that I could be apart of the process. I love setting up handi's for the kids. This makes the third one and I'm shooting for a fourth real soon.
Vince