@rnguy001 i would highly recommend NOT using the dryer. With any of your shirts and pants. It's evil and if it doesn't shrink your clothes, it will decrease the life of all your garments. Not just on this guy but on any of your better fitting clothes.
Having said that, we will always take your returns back. If you're on the edge, order a 42 and send the one back that isn't up to your standard. @OmniscientCause sizes us in Yosemite's but I keep em at my regular TS size so it's all up to you. I don't use mine so much as an shirt/jacket and just use it as an everyday shirt, just a lot warmer.
Hope that helps