It's a 4" barrel. Ammo is .41 cal which is about same size as 10MM. I use semi wad cutter reloads when I'm just messing around. Keep 210 gr. silver tip mag hollow points in them when it's by the bed.
OK... I'm having serious gun lust here. Your baby sounds beautiful.
.22 long pistol was what I learned to shoot on. Still got it, it was Daddy's. He only found out a couple of years before he died that I used to come home from school (we're talking elem and jr high) unload it, strap it on old west gunslinger style (complete with tie down) and practice my quick draw in the mirror until just before Mom got home from work. He turned white as a sheet.
What can I say... I was an evile lil wench. ;-)