A weapon holding more than 6 (SIX) rounds is high capacity. If you can't hit your prey (and I'm assuming the weapon will be designed and used exclusively for hunting) after six shots, you shouldn't be hunting, should you?
Now, if you can explain why anyone would absolutely need more than six rounds in a weapon, I'm happy to listen.
I live in Chicago, and if i found myself in the middle of one of the many shootings going on here on a regular basis, 6 wouldn't be nearly enough for me to feel comfortable.
And to DiamondDave's point. If i'm hunting in the wildnerness and could possibly be attacked by a Bear, or a Boar, or something that could easily kill me if it got me on the ground, let's just say the more ammo i have to fire off without having to reload, the better.
I don't even own a gun. I don't hunt, don't go shooting, etc. But, i recognize the needs/desires of many law abiding citizens. Guns and high capacity magazines don't kill people: people kill people.