I use the 9 mm 20-hole version and it is TIGHT! It even seems tighter than the 4-hole, different caliber version.
I'm not the most experienced hand loader (5 years), but couldn't get it to like my rounds with Hornady seat + crimp die . Tried a Lee FCD die. Always seemed to like some brass brands more than other (best was Geco).
Now I use a Redding seating die, followed by a Hornady taper crimp die. Thats my best setup so far, almost every round goes full in.
I wet tumble my brass and clean the gauge regularly with brake cleaner and Q-tips (collects some case lube from inspecting during loading).