I got my 9yr. old Grandson a Ruger American youth model in 243. It's an 18' barrel in 9 twist. I picked up a new Bushnell Banner 3-9X40 with a 6" eye relief. The rifle is very accurate and fairly light. He started out with very light 75gr. loads and in a very short time is shooting 100gr. Hornady Interlocks behind 47gr. of RL 26. He loves it.