I recently had a similar question. I was about to give up on jerseys but I found some Primal brand jerseys at
LOVE2PEDAL Bicycle Shorts and Cycling Jerseys from Primal, Falconi that fit me very well. Their size descriptions were accurate. I am 6'1", 47" chest and 245lbs. The Primal XXL fit me well. You might be an XL or an XXL.