I'm just getting back into reloading after about 20 years. While waiting for my dies to get here, I picked a powder for .222 Remington and started practicing throwing charges. I am aware of technique and consistent operation, but am throwing between 20.0 and 20.6 grains of IMR4198. Besides the occasional bridging and grains trying to stick in the drop tube, and even the herky jerky action while cutting grains, I get the variation on even the smoothest of throws. I am not optimistic about trying a powder dipper, either. Should I assume that reloaders using these tubular powders are using a powder trickler and weighing each charge? For use with a powder measure, should I only consider powders like 748 and H335?