I used the Lee Collet's when they first came out and wasn't impressed. They are "okay" for low precision work but if you want better tolerances I would suggest you stay with RCBS or, as Bill said, try out the newest Hornady offerings. I fire-form and neck size only on 99% of all my rifle rounds. For general hunting at normal ranges Lee dies are okay but if your grandson will be planning any precision work or distance then I wouldn't recommend Lee sets.