But for one thing, I would never shoot at an animal at 100 yds without some sort of rest. To me it is just unethical and there is a good chance of wounding the animal. At 100 yds, you should have ample time to find some sort of rest. Even if its our knee or sitting, or whatever.
+1
Shooting off hand with a rifle is not my thing. In 2008 i shot a deer looking at me at about 80 yards. Tried a sitting position but the grass was too tall to see the deer, so i did it off hand. The 240 grain .430 XTP bullet hit that deer to the left of its chest. It traveled the full length of the body cavity without tearing up the heart, lungs or diaphragm. It did not even tear up the entrails. The bullet exited the inside of one ham in two pieces.
Waited about 20 minutes, went after that deer and jumped it twice. The deer ran for a total of 350-400 yards and needed a finishing shot.
Never again: i'll pass on an off hand shot if it's much over 40 yards.