We've all done it if we've hunted very long. My policy if a man draws blood other than a grazing wound your done. Too many elk get hit in archery season and not recovered because of lots of reasons. I've heard hunters brag that they have stuck two or more elk and not recovered them during a season. It may be my respect for the animal but in the events of not recovering and animal I tend not to have the heart to shoot another just to cover the first mistake. I would be going after the one elk or trying to find it. Look for crows and magpie's and multiple coyote tracks coming in and out of one general direction. Good luck and we all make mistakes sometimes.