Wow, so many people are saying to size down 1 - 1.5 from their normal size and I did this only to find the boot was "way too small".  Even with thin dress socks these boots were tight fitting and too narrow (and I do not have wide feet).  For me to comfortably fit in these boots I would estimate that I would need to size up at least 1 to 1.5 larger than my normal size just because of the narrowness of this boot.

I tried them on and while it usually takes me some time to get a sense of how new shoes feel ~ I knew immediately that they pinched the sides of my feet so bad that I would not be able to take wearing them for any period of time more than a minute or two and my toes could not splay naturally so I boxed them back up and sent them in for a refund.

The build quality was awesome and I love the Red Wing Heritage line so I gave them 4 stars ... but they just don't fit for me. I would try a bigger size, but the size I would want to try is significantly more expensive at almost $100 more ... so if a bigger size comes down within the same price range I may try them again.