Muzzle brakes are so noisy that they may do more harm than the recoil
The .243 does not recoil much, and a good recoil pad will make it almost zil. I agree that if he cannot handle that, then wait until he can.
Ecclesiastes 12:13 *¶Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man.
14 *For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.