Has anyone got the sugarcane 1934 world fair souvenir shirt?

I tried it on in the store and it was large on me, but Tyler assured me it would shrink a lot, so I grabbed it in L.
I'm a 42 chest, and after a 45 min hot soak, it still seems pretty big. Anyone know if this will have any more shrink in it? Or should I look to sell and grab an M?