Just to put some brackets around what kind of experience it takes to successfully use a .410 in the field here is a pic of my now 22 year old grandson, when he was 9 yrs. old, on the first dove shoot on which he was allowed to use a gun. He took all fairly and humanely.
This bore size is criticized severely as being a handicap for a youngster. Young Jackson Hillis disproved that, in spades. "Rare and desirable" Stoeger Uplander, shortened to fit better. Shooting 1/2 oz. loads, AT APPROPRIATE RANGE!