In the woods, second shots at big game take place in the blink of an eye. At least that's what we think, because we have no notion of time passing between our first and second shots. We shoot, then suddenly we are shooting again, it seems. Sometimes a second shot is necessary because we flat-out miss the first time. Occasionally a follow-up shot is advisable because a tough animal refuses to go down for keeps, even though the first shot did the job.