Put another check in the 20 gauge column. While I wish the 16 gauge was more popular and had better ammo support, because I think it'd make for a near perfect upland gun, it just isn't so.

When it comes to shell selection, the 20 gauge is second only to the 12 gauge. 20 gauge shells are factory loaded for every application a shotgun is suitable for, and the 20 gauge will kill anything a 12ga. will as long as you understand it's limitations.

The 870 Youth gun is a great choice, too. I learned to shoot shotgun with my dad's old (full-size) 870 Wingmaster 20ga, starting when I was about 6 years old. I was a taller/bigger than average kid, but it was still a bit of a handful size-wise until I was 8 or so. Every time I think of that gun it brings back some very fond memories...but I digress.

Just a suggestion, but also consider the Browning BPS Youth. Since I bought my BPS I can honestly say that it's the only pump shotgun I'll ever own. The thumb-tang safety is great (never liked cross-bolt safeties myself), but the bottom eject isn't for everyone (makes loading one at a time at the trap range a bit of a chore).

Good luck.

Mike