. Hornady Black 123 ELD .
But you better believe its fixin to kick the crap out of your 7yo and i would make sure hes backed off that scope quite a bit or hes gona have him a nice round set of stitches around his eye. But thats a great round and it will blow a superb hole in a deer. It will bleed good and wont go far. My son shot a 243 when he was 6yo and the 6.5cm kicks just a hair worse.
