I'm slowly getting familiar with the 550B that I obtained used. I only reload handgun cartridges on it and low to medium loads only. The manual says: "Rule of Thumb: Use the large bar whenever possible". My loads are always under 20 grains, which is what the manual says is upper end for small bar.
I really haven't had any problem leaving the large bar installed but can't help feeling that the small bar would be more appropriate. Advice?