I had a 629 with a 5" barrel. It was a very accurate gun. I recall hitting a coke bottle (20 oz) from 100 yards with it...of course, I was resting on a bench...but I could repeat it and it was with iron sights.
I shot the 300 gr hard cast by Federal Hunting. Saw the biggest deer in my life hunting with that gun. It is the ONLY deer I have ever shot in my life that I didn't find...and this was after tracking it 600+ yards to a pond. I was disapointed. I sold the gun after that hunt. I shouldn't have. I have since come to accept that some times things just don't go right.
I however must also say I have always been attracted to single action guns myself as I prefer single action shooting...and even during the hunt, I shot single action repeating with 2 quick shots after my first hit didn't take him down and...like an idiot I stood there letting him run about 50 yards before firing the follow up shots as I expected the deer to fall over. I shot that deer from about 8 feet away while I was behind a home made ground blind (piled limbs). He was fighting another buck. It was the most exciting hunt I have ever encountered. After firing my first shot, they ran...and I stood watching (again like an idiot) waiting for him to fall over. Then after about 50 yards I realized he wasn't going to fall quick...so I shot 2 more quick shots...bam, bam...
Hind sight though is always 20/20. Oh well. Live and learn. I wonder if I should have done that "police style" double tap. I have never done this before, as with my riffles I always took them down. (BTW, I now don't blaim the handgun. I just think the deer was in an adreniline rush from the fight...and without a doubt I was too).
Sorry for getting off topic. Back to my point. S & W makes an accurate gun.