Small drum in the Uniflow with a baffle 2/3 the way down is the shizzle. Did over 1100 9mm last week @ 6.4 gr each of Power Pistol. Calibrate to a single load then cal at X 10 (as in 64 gr for the 9mm) then check your single throw and tweak. Also did about 450 .357 with 10.4 gr Blue Dot and 50 rounds of .44 Mag @ 15 Gr Blue Dot. Charged all in the tray. Random throws were weighed for assurance. No problems. ANYTHING safe to speed up a single stage Rockchucker when your volume loading. Also use a press mounted tube fed priming system most folks seem to find fault with.

“When Tyranny becomes Law, Rebellion becomes Duty”

Colossians 3:17 (New King James Version)
"And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him."