I'm starting to reload .223 on my 550. The problem I'm having is as the case is coming down after being charged the powder bar comes back into place and spills a small amount of powder onto the shellplate. After a few rounds it gets pretty messy. I'm using the large powder bar and going for 26 grains of H335. I'm also having trouble getting a consistent charge. I've loaded quite a bit of .45acp and have had no troubles. Am I doing something wrong? Any help would be appreciated.