accubonds are great for whitetail. ofter tougher bullets wont mushroom quickly enough for quick kills. I use a 160 AccuBond in my 7mm rem mag for whitetail and antelope but for elk and other large game switch to a 210 gr Partition in my 340 wby. I have shot several elk in the shoulder with good results. It will crush the shoulder and still completely penetrate the elk. Also with no shoulder the elk dont go far from where they were shot. I would not try this with an AccuBond. I think what it comes down to is choosing the bullet based on what your game animal is and understand that no bullet is perfect. As for the 140 vs 160 7mm accubonds, they have nearly the same trajectory so use whichever shoots best in your rifle for deer they will both work great