I have just gone through the same research you have.
I wanted a small (But not to small) .357 4" seven shot revolver to carry on my side while hog hunting.
99% of the time this gun will be used as protection from a wounded hog while tracking in the dark "After" some other club member (or me) makes a bad shot on a hog.
I bought the black model 66 from Buds gun shop and LOVE it!!!
I have shot about a box of 38's and a box of .357 mag ammo through it with NO problems! The trigger is great right out of the box.
Good luck with your new gun...............................