Once the Dillon is set up I usually don't fiddle with anything. I do most of my 38/357 and 44 on a Rockchucker and the only lock ring I set is on the flaring die, and I use the same spacer on the 38/357 as for 44 mag/special flaring - don't even remember where it came from. I think RCBS(?) used to offer spacers in different thicknesses but haven't seen any in ages.
