I recently got a 22cal mold from MP and using my own gas checks I’m finding that my Lee 225 sizer is leaving a pretty prominent ridge in the gas check. Haven’t shot them yet so I don’t know if this is an issue yet. The Lee sizer stem only measure 221. Is that proper? Shouldn’t it be bigger considering it’s sizing 225
If sizing bottom first it domes the gas check.
Here is a picture of the ridged gas check