I'm a 42L with 32 waist, 6'3, ~195 lb. The 52 ma-1 fits me well, but with limited range of motion in the shoulders. I don't think sizing up will help much. As others said, I think it has to do more with the construction of the jacket itself. That's just a hunch though. Besides, the shoulders on this jacket are pretty structured, so if you size up, it will look like you are wearing shoulder pads. You don't want that.
6/23/10 at 3:10pm