70.00 Dillon RL450/550 .44-40 conversion unit London Apr 15, 2024 - 4:47 PM gdp Never used Dillon .44-40 conversion unit for the Dillon RL300, AT500 as well as the 450 and 550 progressive presses. Current price is $75US from Dillon. Includes the shell plate, buttons and powder drop funnel / belling die.