You are most definitely right on little cases like the hornet and bee Jim. With lite charges of fast powers they require exact weighed charges. A 1//10 of a grain of Bullseye or Unique, or Red Dot etc. in a little hornet size case can make a world of difference. I have a BR seating die (think it is also a Bonanza die) that I seat hornet/Khornet/222 & 233 with. Also a big factor in hornet is making sure that you are just neck sizing (to save brass), and going deep enough with an M die to start the bullet straight before seating. My rule of thumb is it must be deep enough so that if the bullet is a GC, it will start below the top of the gc. Takes a bit of fiddeling to get the setting on the m die just right, and you need to go slow in the process, because hornet brass is very thin and easy to mess up. It is a fun ctg, but with cast, and in particular with lite weight bullets and very lite charges it is very temperamental. I am working with the little 37gr. PB NOE bullet in my K, and it is a real challenge. However when you get under an inch on a calm day (of which we have few), it is all worth it.