The Redding Competition shell holders do not push the case further into the sizing die. There are five shell holders in a set and the resized case will have from .002 to .010 less shoulder bump than a standard shell holder.
If you have a problem with pushing the case shoulder back far enough then just lap the top of the shell holder until the case chambers. You can lap the top of the shell holder on a flat surface using fine wet and dry sand paper. Wet or oil the sand paper and move the shell holder in a figure eight pattern rotating the shell holder frequently in your fingers. Keep measuring the shell holder around its diameter and remove .001 or .002 at a time and checking the case fit in the chamber.
I'm 69 years old and only had to lap a shell holder once in over 48 years of reloading. Meaning most of the time the die simply needs to be adjusted further down with press cam over. Or also the possibility of a worn press with too much slop in the linkage. And most resizing dies will push the case shoulder back more than actually needed and why Redding makes their competition shell holders to size the case "LESS".