I have been using a #55 for better than 40 years now and I have found that authority is good but I have never used the little hammer thingy since the first few months or so. I start with the handle down and do a full swing up and back to down to drop powder charges and do not let the handle bounce off the stops. I usually can stay + or - .0002 Gr that way, (I have lots of practice). I have good luck even with IMR 4064. Also I find that the deeper you make the powder ie all three parts of the measure moved as much as possible together the better is works not only for accuracy but for the crunchyness as well. Best o'luck Bear
