From an old thread:
I use a Redding BR-30 and I do not tap, knock, whatever. I grasp the throw handle in such a way to make a slow, high torque back and forth motion. This avoids vibration and bumps when throwing long kernel extruded powders. The handle doesn't stop, it just shears right through.
When I do weigh charges, rather than deliberately throwing short and trickling up I've found it faster to set the measure to throw right on with most deviations occurring on the high side. Then I just dump out what I believe to be an appropriate number of kernels and put the pan back on the 10-10 for confirmation. Most of the time I hit it right on the money. I've used that scale for over forty years and I've built up a pretty good feel for correcting charges to make the pointer line up just right. On top of that I reap the benefit of having a lot of the charges throwing right on instead of deliberately setting myself up to trickle up every one of them.
