^^^^^^^I have a RCBS 1500 chargemaster. I have the McDonald's straw hack going and it works great.
Single-kernal TRICKLER. Works very well, adjusting the weight on the straw lets you drop single kernels of anything I ran thought it. Small ball powders can take awhile to get dialed in right, but extruded kernals are easy to get to drop one at a time:electronic powder trickler