Mine doesn't John. If the felt is relative thin and soft the brim will bend with the bowstring, however, when I'm on stand or stalking I just flip up the anchor side of the brim and VOILA, no probelm! I'm talking about rabbit or wild hare felt as I have had problems with wool felt brims over the years. That's why I gave up wool fedoras and only use good felt hats these days. Plus felt doesn't get nearly as hot as wool while I'm hoofin it up a hill! Of course you can shape a brim to accommodate the string if you have any problems.