I have kept a 3 X 5 card file (like cooks use for recipies) for about 30 years. There are raised tabs for each caliber - each card has bullet, charge, primer, case, OAL, chronograped velocity, and group results. On the back of the card, I keep track of what was shot with that load - something like: "Nov. 1996. Mature cow elk broadside at 250 yards. Hit high in lungs. Ran about 50 yards and went down. Recovered bullet - .640 and weighs 132 grains."

I wish some one made a nice little computer program for this stuff - although it would a mountain of a task to transfer 30 years of information into it . . .