Been using a Uniflow for 40+ years, always get good accurate weights with pistol/shotgun powder.
The trick to getting consistent weights is when you rotate the drum to fill the cavity slightly rotate
the drum back and forth tapping on the stop twice then dump the powder.
TAP TAP dump, TAP TAP dump
Be consistent with the taps, one light one heavy won't cut it.
Once you've learned how to be consistent with the taps you will find it is very accurate.
The trick to getting consistent weights is when you rotate the drum to fill the cavity slightly rotate
the drum back and forth tapping on the stop twice then dump the powder.
TAP TAP dump, TAP TAP dump
Be consistent with the taps, one light one heavy won't cut it.
Once you've learned how to be consistent with the taps you will find it is very accurate.