I bought a scale that measures down to .02 grains the other week for 20 bucks. Well last week i was reloading for an OCW test in my rem 700 bdl .270 and found that 2 out of 3 shots, in all my charge weights, came to be duplicates on my chronograph. Is it odd to have this many duplicates when reloading for an OCW test. Or can this be attributed to keeping my powder charge of 3 bullets in a group within .02 grains? O i am using the $100 "Pro Chrono"