I loaded some 120BT in my 7 Rem Mag a few years ago. At 3350fps they left a pretty big hole in the deer. I shot 7-8 deer with them from 50-300 yards. I had no trouble finding them... All were under 140lbs also. With broadside shots at /08 speed they will be fine, I wouldn't want to try the texas heart shot with one though. The 140gr's would have more reliable penetration (I like the gamekings), but the 120's will be fine for what you are needing; if it's that recoil sensitive.