I recently tried one of these and initially I had great results in that I had 10 pours in a row come out exactly at the measurement I wanted using BL-C(2). When I installed one on my tool head for 300 blk and used Accurate 1680 the powder drop was back to its usual +- 0.1 variance. I guess the answer to the question for me is that it doesn't hurt, especially for the price.