Gress, (thanks for the answer about primer pocket cleaning by the way.) Yes, production is volume powder measuring/loading. The factory doesn't weigh every load either, no matter what they are loading. What you do is CHECK TO MAKE SURE YOUR MEASURE IS THROWING WHAT IT SHOULD! Lets say I am loading .45 ACP with 5.3 gr of 231 and then change over and load 21 gr of 2400 in a .44 mag. Now I go back to Win 231 and I THINK it is still set up for 5,3 grs! Boy will I be in for a surprise at the range! That is why I get the scale out a WEIGH the charge before loading! What if someone was looking at it and screwed with the measure? Everyone loves turning knobs and dials! It might be very high or very low, but chances are good it wasn't what I expected either way. Now with a fixed measure (Lee Disk Measure) I KNOW it isn't different if I glance at the disk and it is the right one. Sure the powder weight might not be exactly 5.3 gr of 231, but it won't be much over or much under that (depending on humidity which can effect weight a few tenth grains either way), although the Disk Measures rarely throws the exact amount claimed, which doesn't matter much. Sure if I want EXACTLY 5.3 instead of 5.2, I can ream/polish it out to exactly 5.3, but for all realistic purposes, it is fine.