During a match yesterday, I had to stop and knap my flint...no big deal, but it occurred to me that I had no recollection of when I had put that flint in. I finished the match, and know I fired 27 shots there, and guess I must have fired that many in the most recent prior one...that's over 50 shots out of one surface (I reversed the flint when I got home and cleaned the gun)...I'm just curious as to what life most of you expect to get from a flint...Hank