If your dies are Redding, they do not have a vent hole and the lube accumulates on the shoulder of the die. My 375 Weatherby FL die is notorious for leaving 8 dents around the radius shoulder if I lube every case. I have to skip cases to prevent the dents.
This die also has to be cleaned after every use with methylated spirits otherwise the lube builds up too much.
I even switched from wax to RCBS case lube to see if the problem went away…made it worse and I had to lube 5 cases on the pad, then size a lubed case, size 2 cases with no lube, then size a lubed case and so on and so forth.
Do not know why Redding do not use a vent hole, life would be easier with one.
Cheers.