Inconsistent Powder Charge
RE: Inconsistent Powder Charge
The case pushing up on the funnel activates the powder measure and pushes the powder bar over. Variations in case length change how far the powder bar travels. If you reduced the case mouth flaring from the initial setting and used a longer case to check flaring, then shorter cases may not fully activate the bar.
Increase the flare by turning the powder die down in 1/8th turn increments, and weigh several charges at the adjustment, until the powder charges become consistent again.