Yeah I can attest to that aweful feeling, happened a few weeks ago missed a NT mule deer withthe ML. Didn't know how it was possible so I traded the field for the range and found my ML wouldn't hold a group. Assumed the scope as everything appeared good but found out one of my base screws sheered off. Replaced all 4 just to be safe and returned to find it back to it's usual self.............URG[:@]! When did it happen don't know shot a mulie doe the first morning of season(couple weeks earlier) and hit her right where I was aiming. Hunting gods have funny ways to humble us!

Don't let iteat you to much, learn from the mistake but move past it and get after him again. Good Luck