My hands are also 7" or so and I am primarily a 9mm shooter. The following is my list of what I've found works:
Steyr M9 - looked at a Glock 19 but never felt comfortable with the grip. It is a pleasure to shoot, great trigger and ergonomics. I am as accurate with this as I was with the Walther, if you are interested in polymer, this is a great gun or consider...
Walther P99 - fit well, really good accuracy, but during my range session testing it out it would not feed speer gold dot hollow points and jammed on one so badly I had to have the range master help clear it. I am not the most experienced shooter but I've never had this bad a problem. It did feed winchester white box and umc fine, but...
Browning HP - if you want a metal pistol with hi caps, it's hard to beat the HP.
S&W 3913 - if you don't care about high caps the single stack 3913 is really very easy to hold with smaller hands.
Good luck!