Was 4 when I got my first Crossman 22 cal pellet rifle and when I shot my first 22lr rifle, it was a Remington black and chrome Nylon 66, used to shoot silhouettes from the bench with it.
With the Crossman I took down rabbits with head shots, doves and quail, and some other birds. My first kill was a dove at 5 yrs old.
My son shot his first air rifle last year at the age of 4, and will soon be shooting his first 22lr.
I shot a lot at an early age. At age 8 I shot complete smallbore silhouette matches, 40 rounds off hand with a lightweight single shot 22lr H&R rifle, I was so tired at the end of the match of holding that rifle in the air, but it was so much fun .
They used to make, and I believe they still do, the silhouette targets but for air rifles, and my dad had me practice almost every afternoon in the backyard, so I got used to shooting offhand really young.
At age 6 took down my first ducks. Using my godfathers Browning semi-auto 12 ga, had a system where the barrel absorbed the recoil, so it didn't recoil much. We'd wait for the ducks to land, then I'd take the first shot at the ducks in the water and my dad followed up as they were taking off the pond. These are some of the best memories I have with my dad, freezing cold mornings with hot cocoa and shooting at ducks.
At age 7 I shot my first javelina with a Savage 24V, over under 223/20ga with a Redfield 3x9 wideview I think it was called, it had an oval shape. I used the 223 Rem shooting Speer 70gr bullets, and did a follow up shot at that Javelina with the 20ga with buckshot because it was still kicking and I scoped myself, still remember the blood coming out of my forehead, I actually still have the scar over my eyebrow.
Those were some awesome times.