Yes, pretty much any change in bullet shape, especially diameter, will require a ramp adjustment. I run my Mr. Bulletfeeder with 230gr .RN 45's, 160gr .RN 38's, and 55gr .BT 223's - for all three calibers, I am using (the same) 2 shims. Once I got each setup dialed in , I made a 1" wide aluminum "gauge" that matches the thickness of the gap between the bottom of the ramp and the adjustment slot of the collator for that bullet (and made sure that I labeled them ) - makes switching from one to another quick and painless.