I realised I was losing it a few years ago when moving home. I came across a .22 BSA Standard underlever and couldn't for the life of me remember buying it, shooting it or even seeing it before. Admittedly at the time I had far too many guns, but even now, after two major auction consignments pared the collection down by 75%, the memory of that rifle reminds me not to take it for granted that I know exactly what I have tucked away.