Special gas checks, too many sizes....

This is my 200 gr. 10mm FP bullets, fantastic for .40 or 10mm applications. Supply of proper checks was a problem, it is getting better now.

I’m sizing 0.401” and they sport a shank diameter of 0.365”, but have a foot on the bullet base/shank bottom that is 0.382” O.D.

Lyman .41 checks are 0.391 I.D. / 0.411 O.D. too loose.
I have some Gator has checks that are 0.384” I.D. and 0.423” O.D. Thick enough they sort of work.

Sage’s shows the .41 BSS in stock (#3), and they should be tighter than the Gator checks that I currently was trying. They are out of the .40 BSS checks.

What do you think?