I think they refer to it as a "Senior Moment". I've had my share too.Made a post few days back concerning problem I was having with my GRRW .54 RB rifle snapping using the caps I had! Seems it was leaving some residue inside the nipple and I was having to pull the nipple and clean out with a punch. Well...as it turned out...part of my problem was I discovered that I had some damp black powder that was the main cause and the other problem was that I have been somewhat STUPID! Stupid to the degree that it took me a while to have it etched across my brain, after I had gotten rid of the damp power to think of SNAPPING a cap through the nipple to clean out the residue!!! I first got involved with BP shooting when I was 18 years age back in 1958 but I enlisted into the military at that time and my time for shooting at that time was that I had been chosen to shoot on the All Army Rifle Team and for the next 45 years, after getting out of the military I continued to shoot NRA High Power Matches and my time for BP was limited! Within the last ten years I've gotten back into the game and am enjoying picking up where I left off so to speak! So if I've ruffled you fellows feathers please forgive me for being somewhat short-sighted about solving what was really a simple problem! At age 83 I've cut myself a little slack!