Hi Joe,
Well, that's the problem. I used to do exactly this but eventually found too much variety between different shirt's rate of shrinkage to keep it up. I now wash in cold and dry on low heat, but there's still SOME shrinkage. (which also makes me wonder if the heat from ironing causes it too) Essentially, I'm trying to figure out how long to wait before ordering more shirts. I don't want to wash the shirt once and then say "OK, the sleeve needs to be a half inch longer" only to find out that it will continue shrinking after that.
When measuring myself for the shirt, it was difficult to determine the feel of the tape versus a shirt being worn in regards to how snug the collar is, etc. so I acknowledged that this first shirt was going to have to be a starting point and probably wouldn't be just right, which it wasn't.
Hmmmm.... In that case I'd say 3 washings/hot dryings (5 if you wish) would be your best out. Dealing with difference shirtmakers is another issue. The equations change from maker to maker, and also fabrics. But if you're still experiencing shrinkage and sizing issues after 8 and 10 washings it might not be the shirt but rather (in my case especially) that extra slice of pie. :icon_smile: