I shoot groups of five.I'am going tomorrow to the range for a new bullet load.Example i'am loading for a .223 contender new 45g bullet.my other 45g bullets i use likes h322.I have them loaded in groups of five.they are 23.5g,24g.24.5g,25g,and 25.5g.I seated them .10 off lands.I pick the best group out of these.Then i will make this load up with all avaible primers in groups of five.Take the best group of these and play with seating depth.I also make a habit to do two differnt calibers at a time.Tommorrow i will also be working loads on a 357 barrel i will shoot one .233 round then one .357 round.This lets my barrel cool between shots.I also clean my barrel every five shots then fire two fouling shots. (not at my target)I use targets that use 5 bulls so i will only have two targes one for each gun.I take them home and log all info in my loading folder and cut out each group and paste on the back of the page.This has always worked for me i'am sure there are faster ways.