After months of waiting I finally got my Steinel 10mm ammo. However I can only seem to fit 16/19rds into my mags whereas I can get all 19 Fort Scott TUI rounds in there, and in my plain 14rders I could probably get the 14th in if my fingertips weren't mostly burst blood vessels now but it's noticeably more difficult than with Underwood 200gr HP.
I think I've seen stuff like this happen in YouTube videos but never had it happen in person. Is this a thing?