Like everyone else, 2400 or 296/H110. I've been quite happy with the 240gr Hornady XTP HP bullets. A 240gr SP is fine too. Out of my 6" 629-2, I get 1300 fps good for 900 ft-lbs using a near max charge of 296. Winchester factory 240gr JSP fly out at 1326fps.
I've thought about giving the Speer 210gr gold dot a go sometime, just haven't had an opportunity. As a bonded bullet, it should do well on deer size game. Good expansion, penetration, and holding together. They run 1460 fps over a max charge of 296.
Note: S&W does not recommend using over 240gr bullets out of their 629 revolvers. Heavier bullets can cause the cylinder to jump timing or some sort of issue, so I avoid the 270 & 300gr bullets. I'm not sure if they ever got this fixed, but I recall it applying to -1, -2, -3. Not sure about newer ones. They are not Rugers but more than adequate.